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Document and Entity Information - USD ($) $ in Thousands	12 Months Ended
Document and Entity Information - USD ($) $ in Thousands	Dec. 30, 2017	Feb. 16, 2018	Jul. 01, 2017
Document and Entity Information [Abstract]
Entity Registrant Name	Kadant Inc.
Entity Central Index Key	0000886346
Current Fiscal Year End Date	--12-30
Entity Filer Category	Large Accelerated Filer
Document Type	10-K
Document Period End Date	Dec. 30, 2017
Document Fiscal Year Focus	2017
Document Fiscal Period Focus	FY
Amendment Flag	false
Entity Common Stock, Shares Outstanding		11,028,033
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Public Float			$ 804,721

Consolidated Balance Sheet - USD ($) $ in Thousands	Dec. 30, 2017	Dec. 31, 2016
Current Assets:
Cash and cash equivalents	$ 75,425	$ 71,487
Restricted cash	1,421	2,082
Accounts receivable, less allowances of $2,879 and $2,395	89,624	65,963
Inventories	84,933	54,951
Unbilled contract costs and fees	2,374	3,068
Other current assets	12,246	9,799
Total Current Assets	266,023	207,350
Property, Plant, and Equipment, at Cost, Net	79,723	47,704
Other Assets (Note 5)	14,311	11,452
Intangible Assets, Net	133,036	52,730
Goodwill	268,001	151,455
Total Assets	761,094	470,691
Current Liabilities:
Current maturities of long-term obligations (Note 6)	696	643
Accounts payable	35,461	23,929
Accrued payroll and employee benefits	29,616	20,508
Customer deposits	30,103	21,168
Billings in excess of costs and fees	7,316	1,271
Other current liabilities	29,038	21,394
Total Current Liabilities	132,230	88,913
Long-Term Obligations (Note 6)	241,384	65,768
Long-Term Deferred Income Taxes (Note 5)	29,085	14,631
Other Long-Term Liabilities (Note 3)	25,891	17,100
Commitments and Contingencies (Note 7)
Stockholders' Equity (Notes 3 and 4):
Preferred stock, $.01 par value, 5,000,000 shares authorized; none issued	0	0
Common stock, $.01 par value, 150,000,000 shares authorized; 14,624,159 shares issued	146	146
Capital in excess of par value	103,221	101,405
Retained earnings	342,893	321,050
Treasury stock at cost, 3,613,838 and 3,686,532 shares	(88,554)	(90,335)
Accumulated other comprehensive items (Note 13)	(26,715)	(49,637)
Total Kadant Stockholders' Equity	330,991	282,629
Noncontrolling interest	1,513	1,650
Total Stockholders' Equity	332,504	284,279
Total Liabilities and Stockholders' Equity	$ 761,094	$ 470,691

Consolidated Balance Sheet (Parenthetical) - USD ($) $ in Thousands	Dec. 30, 2017	Dec. 31, 2016
Statement of Financial Position [Abstract]
Accounts receivable, allowances	$ 2,879	$ 2,395
Preferred stock, par value (in usd per share)	$ 0.01	$ 0.01
Preferred stock, authorized (in shares)	5,000,000	5,000,000
Preferred stock, issued (in shares)	0	0
Common stock, par value (in usd per share)	$ 0.01	$ 0.01
Common stock, authorized (in shares)	150,000,000	150,000,000
Common stock, issued (in shares)	14,624,159	14,624,159
Treasury stock (in shares)	3,613,838	3,686,532

Consolidated Statement of Income - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 30, 2017	Dec. 31, 2016	Jan. 02, 2016
Income Statement [Abstract]
Revenues (Note 11)	$ 515,033	$ 414,126	$ 390,107
Costs and Operating Expenses:
Cost of revenues	283,999	225,737	209,982
Selling, general, and administrative expenses	160,515	135,753	122,814
Research and development expenses	9,563	7,380	6,677
Restructuring costs and other income (Note 8)	203	(317)	515
Total Costs and Operating Expenses	454,280	368,553	339,988
Operating Income	60,753	45,573	50,119
Interest income	447	269	200
Interest expense	(3,547)	(1,293)	(948)
Income from Continuing Operations Before Provision for Income Taxes	57,653	44,549	49,371
Provision for income taxes (Note 5)	26,070	12,083	14,762
Income from Continuing Operations	31,583	32,466	34,609
Income from discontinued operation (net of income tax provision of $2 in 2016 and $43 in 2015)	0	3	74
Net Income	31,583	32,469	34,683
Net Income Attributable to Noncontrolling Interest	(491)	(392)	(294)
Net Income Attributable to Kadant	31,092	32,077	34,389
Amounts Attributable to Kadant:
Income from Continuing Operations	31,092	32,074	34,315
Income from Discontinued Operation	0	3	74
Net Income Attributable to Kadant	$ 31,092	$ 32,077	$ 34,389
Earnings per Share from Continuing Operations Attributable to Kadant (Note 12)
Basic (in dollars per share)	$ 2.83	$ 2.95	$ 3.16
Diluted (in dollars per share)	2.75	2.88	3.09
Earnings per Share Attributable to Kadant (Note 12)
Basic (in dollars per share)	2.83	2.95	3.16
Diluted (in dollars per share)	$ 2.75	$ 2.88	$ 3.10
Weighted Average Shares (Note 12)
Basic (in shares)	10,991	10,869	10,867
Diluted (in shares)	11,312	11,149	11,094
Cash Dividends Declared per Common Share (in dollars per share)	$ 0.84	$ 0.76	$ 0.68

Consolidated Statement of Income (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Jan. 02, 2016
Income Statement [Abstract]
Income from discontinued operation, income tax provision	$ 2	$ 43

- Definition

Amount of tax expense (benefit) related to a discontinued operation. Includes, but is not limited to, tax expense (benefit) related to income (loss) from operations during the phase-out period, tax expense (benefit) related to gain (loss) on disposal, tax expense (benefit) related to gain (loss) for reversal of write-down (write-down) to fair value, less cost to sell, and tax expense (benefit) related to adjustments of a prior period gain (loss) on disposal.

+ References + Details

Consolidated Statement of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 30, 2017	Dec. 31, 2016	Jan. 02, 2016
Statement of Comprehensive Income [Abstract]
Net Income	$ 31,583	$ 32,469	$ 34,683
Other Comprehensive Items:
Foreign currency translation adjustment	23,847	(13,240)	(20,687)
Pension and other post-retirement liability adjustments, net (net of tax (benefit) provision of ($150), $125, and $107)	(738)	256	172
Deferred gain on hedging instruments (net of tax provision (benefit) of $39, $(67), and $84)	67	241	563
Other Comprehensive Items	23,176	(12,743)	(19,952)
Comprehensive Income	54,759	19,726	14,731
Comprehensive Income Attributable to Noncontrolling Interest	(745)	(314)	(168)
Comprehensive Income Attributable to Kadant	$ 54,014	$ 19,412	$ 14,563

Consolidated Statement of Comprehensive Income (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
	Dec. 30, 2017	Dec. 31, 2016	Jan. 02, 2016
Other Comprehensive Items:
Pension and other post-retirement liability adjustments, tax (benefit) provision	$ (150)	$ 125	$ 107
Deferred gain on hedging instruments, tax provision (benefit)	$ 39	$ (67)	$ 84

Consolidated Statement of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 30, 2017	Dec. 31, 2016	Jan. 02, 2016
Operating Activities
Net Income Attributable to Kadant	$ 31,092	$ 32,077	$ 34,389
Net income attributable to noncontrolling interest	491	392	294
Income from discontinued operation	0	(3)	(74)
Income from continuing operations	31,583	32,466	34,609
Adjustments to reconcile income from continuing operations to net cash provided by operating activities:
Depreciation and amortization	19,375	14,326	10,821
Stock-based compensation expense	5,803	5,069	5,741
Excess tax benefit from stock-based compensation awards	0	0	(881)
Provision for losses on accounts receivable	436	453	379
Loss (gain) on sale of property, plant, and equipment	42	(350)	4
Deferred income tax benefit	578	(613)	(1,706)
Other items, net	1,420	1,362	(287)
Contributions to U.S. pension plan	(1,080)	(1,080)	(1,080)
Changes in current assets and liabilities, net of effects of acquisitions:
Accounts receivable	(10,907)	1,003	(10,640)
Unbilled contract costs and fees	1,310	3,407	(1,534)
Inventories	1,163	3,553	(6,486)
Other current assets	(130)	753	1,495
Accounts payable	(522)	(5,238)	(1,752)
Other current liabilities	16,093	(4,111)	11,727
Net cash provided by continuing operations	65,164	51,000	40,410
Net cash provided by (used in) discontinued operation	0	3	(38)
Net cash provided by operating activities	65,164	51,003	40,372
Investing Activities
Acquisitions, net of cash acquired (Note 2)	(204,731)	(56,617)	0
Purchases of property, plant, and equipment	(17,281)	(5,804)	(5,479)
Proceeds from sale of property, plant, and equipment	130	428	30
Net cash used in continuing operations for investing activities	(221,882)	(61,993)	(5,449)
Financing Activities
Proceeds from issuance of debt (Note 6)	232,019	51,046	24,000
Repayment of debt	(67,696)	(18,429)	(18,611)
Dividends paid	(9,011)	(8,038)	(7,179)
Tax withholding payments related to stock-based compensation	(2,206)	(2,572)	(2,499)
Payment of debt issuance costs (Note 6)	(1,257)	(27)	0
Change in restricted cash	880	(789)	(1,066)
Dividend paid to noncontrolling interest	(882)	0	0
Purchases of Company common stock	0	0	(9,906)
Proceeds from issuance of Company common stock	0	2,350	754
Payment of contingent consideration (Note 2)	0	(1,091)	0
Excess tax benefits from stock-based compensation awards	0	0	881
Other financing activities	(491)	216	0
Net cash provided by (used in) continuing operations for financing activities	151,356	22,666	(13,626)
Exchange Rate Effect on Cash and Cash Equivalents from Continuing Operations	9,300	(5,714)	(1,145)
Decrease in Cash from Discontinued Operation	0	(5)	0
Increase in Cash and Cash Equivalents from Continuing Operations	3,938	5,957	20,152
Cash and Cash Equivalents at Beginning of Year	71,487	65,530	45,378
Cash and Cash Equivalents at End of Year	$ 75,425	$ 71,487	$ 65,530

Consolidated Statement of Stockholders' Equity - USD ($) $ in Thousands	Total	Common Stock	Capital in Excess of Par Value	Retained Earnings	Treasury Stock	Accumulated Other Comprehensive Items	Noncontrolling Interest
Beginning balance (in shares) at Jan. 03, 2015		14,624,159			3,760,019
Beginning balance at Jan. 03, 2015	$ 265,459	$ 146	$ 98,769	$ 270,249	$ (87,727)	$ (17,146)	$ 1,168
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	34,683			34,389			294
Dividends declared	(7,380)			(7,380)
Activity under stock plans (in shares)					(139,000)
Activity under stock plans	4,160		886		$ 3,274
Tax benefits related to employees' and directors' stock plans	881		881
Purchases of Company common stock (in shares)					229,760
Purchases of Company common stock	(9,906)				$ (9,906)
Other comprehensive items	(19,952)					(19,826)	(126)
Ending balance (in shares) at Jan. 02, 2016		14,624,159			3,850,779
Ending balance at Jan. 02, 2016	267,945	$ 146	100,536	297,258	$ (94,359)	(36,972)	1,336
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	32,469			32,077			392
Dividends declared	(8,285)			(8,285)
Activity under stock plans (in shares)					(164,247)
Activity under stock plans	4,893		869		$ 4,024
Other comprehensive items	(12,743)					(12,665)	(78)
Ending balance (in shares) at Dec. 31, 2016		14,624,159			3,686,532
Ending balance at Dec. 31, 2016	284,279	$ 146	101,405	321,050	$ (90,335)	(49,637)	1,650
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	31,583			31,092			491
Dividends declared	(9,249)			(9,249)
Dividend paid to noncontrolling interest	(882)						(882)
Activity under stock plans (in shares)					(72,694)
Activity under stock plans	3,597		1,816		$ 1,781
Other comprehensive items	23,176					22,922	254
Ending balance (in shares) at Dec. 30, 2017		14,624,159			3,613,838
Ending balance at Dec. 30, 2017	$ 332,504	$ 146	$ 103,221	$ 342,893	$ (88,554)	$ (26,715)	$ 1,513

Nature of Operations and Summary of Significant Accounting Policies

12 Months Ended

Dec. 30, 2017

Accounting Policies [Abstract]

Nature of Operations and Summary of Significant Accounting Policies

Nature of Operations

Continuing Operations

Kadant Inc. was incorporated in Delaware in November 1991 and currently trades on the New York Stock Exchange under the ticker symbol "KAI."

Kadant Inc. and its subsidiaries' (collectively, the Company) continuing operations include two reportable operating segments, Papermaking Systems and Wood Processing Systems, and a separate product line, Fiber-based Products.

Through its Papermaking Systems segment, the Company develops, manufactures, and markets a range of equipment and products for the global papermaking, paper recycling, recycling and waste management, and other process industries. The Company's principal products include custom-engineered stock-preparation systems and equipment for the preparation of wastepaper for conversion into recycled paper and balers and related equipment used in the processing of recyclable and waste materials; fluid-handling systems and equipment used in industrial piping systems to compensate for movement and to efficiently transfer fluid, power, and data; doctoring systems and equipment and related consumables important to the efficient operation of paper machines and other industrial processes; and filtration and cleaning systems essential for draining, purifying, and recycling process water and cleaning fabrics, belts, and rolls in various process industries.

Through its Wood Processing Systems segment, the Company develops, manufactures, and markets stranders, debarkers, chippers, and logging machinery used in the harvesting and production of lumber and OSB. Through this segment, the Company also provides refurbishment and repair of pulping equipment for the pulp and paper industry.

Through its Fiber-based Products business, the Company manufactures and sells biodegradable, absorbent granules derived from papermaking by-products for use primarily as carriers for agricultural, home lawn and garden, and professional lawn, turf and ornamental applications, as well as for oil and grease absorption.

See Note 11, Business Segment and Geographical information for further details.

Discontinued Operation

In 2005, the Company's Kadant Composites LLC subsidiary sold substantially all of its assets to a third party. All activity related to this business is classified in the results of the discontinued operation in the accompanying consolidated financial statements.

Noncontrolling Interest

One of the Company's foreign subsidiaries that manufactures fluid-handling products is part of a joint venture agreement with an Italian company in which they hold a 50 percent ownership interest. The agreement provides the subsidiary with the option to purchase the remaining 50 percent interest in the joint venture at any time after January 1, 2006.

Principles of Consolidation

The accompanying consolidated financial statements of the Company include the accounts of its wholly and majority-owned subsidiaries. All material intercompany accounts and transactions have been eliminated.

Fiscal Year

The Company has adopted a fiscal year ending on the Saturday nearest to December 31. References to 2017, 2016, and 2015 are for the fiscal years ended December 30, 2017, December 31, 2016, and January 2, 2016, respectively.

Use of Estimates and Critical Accounting Policies

The preparation of financial statements in conformity with U.S. generally accepted accounting principles (GAAP) requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, disclosure of contingent assets and liabilities at the date of the financial statements, and the reported amounts of revenues and expenses during the reporting period.

Critical accounting policies are defined as those that entail significant judgments and estimates, and could potentially result in materially different results under different assumptions and conditions. The Company believes that the most critical accounting policies upon which its financial position depends, and which involve the most complex or subjective decisions or assessments, concern revenue recognition, income taxes, the valuation of goodwill and intangible assets, inventories, and pension obligations. A discussion on the application of these and other accounting policies is included in Notes 1 and 3.

Although the Company makes every effort to ensure the accuracy of the estimates and assumptions used in the preparation of its consolidated financial statements or in the application of accounting policies, if business conditions were different, or if the Company were to use different estimates and assumptions, it is possible that materially different amounts could be reported in the Company's consolidated financial statements.

Revenue Recognition and Accounts Receivable

The Company recognizes revenue under Accounting Standards Codification (ASC) 605, "Revenue Recognition," (ASC 605) when the following criteria have been met: persuasive evidence of an arrangement exists, delivery has occurred or service has been rendered, the sales price is fixed or determinable, and collectability is reasonably assured. When the terms of the sale include customer acceptance provisions, and compliance with those provisions cannot be demonstrated until customer acceptance, revenues are recognized upon such acceptance. The Company includes in revenue amounts invoiced for shipping and handling with the corresponding costs reflected in cost of revenues. Provisions for discounts, warranties, returns and other adjustments are provided for in the period in which the related sales are recorded. Sales taxes, value-added taxes and certain excise taxes collected from customers and remitted to governmental authorities are accounted for on a net basis and therefore are excluded from revenue.

Most of the Company's revenue is recognized in accordance with the accounting policies in the preceding paragraph. However, when a sale arrangement involves multiple elements, such as equipment and installation, the Company considers the guidance in ASC 605. Such transactions are evaluated to determine whether the deliverables in the arrangement represent separate units of accounting based on the following criteria: the delivered item has value to the customer on a stand-alone basis, and if the contract includes a general right of return relative to the delivered item, delivery or performance of the undelivered item is considered probable and substantially under the control of the Company. Revenue is allocated to each unit of accounting or element based on relative selling prices and is recognized as each element is delivered or completed. The Company determines relative selling prices by using either vendor-specific objective evidence (VSOE) if that exists, or third-party evidence of selling price. When neither VSOE nor third-party evidence of selling price exists for a deliverable, the Company uses its best estimate of the selling price for that deliverable. In cases in which elements cannot be treated as separate units of accounting, the elements are combined into a single unit of accounting for revenue recognition purposes.

In addition, revenues and profits on certain long-term contracts are recognized using the percentage-of-completion method or the completed-contract method of accounting pursuant to ASC 605. Revenues recorded under the percentage-of-completion method were $27,676,000 in 2017, $23,300,000 in 2016, and $32,078,000 in 2015. The percentage of completion is determined by comparing the actual costs incurred to date to an estimate of total costs to be incurred on each contract. If a loss is indicated on any contract in process, a provision is made currently for the entire estimated loss. The Company's contracts generally provide for billing of customers upon the attainment of certain milestones specified in each contract. Revenues earned on contracts in process in excess of billings are classified as unbilled contract costs and fees and amounts billed in excess of revenues earned are classified as billings in excess of contract costs and fees. There are no significant amounts included in the accompanying consolidated balance sheet that are not expected to be recovered from existing contracts at current contract values, or that are not expected to be collected within one year, including amounts that are billed but not paid under retainage provisions.

For long-term contracts that do not meet the criteria under ASC 605-35 to be accounted for under the percentage-of-completion method, the Company recognizes revenue using the completed-contract method. When using the completed-contract method, the Company recognizes revenue when the contract is substantially complete, the product is delivered and, if applicable, the customer acceptance criteria are met. Customer deposits included $2,945,000 at year-end 2017 and $5,158,000 at year-end 2016 of advance payments, net of accumulated costs, on long-term contracts accounted for under the completed-contract method.

Accounts receivable are recorded at the invoiced amount and do not bear interest. The Company exercises judgment in determining its allowance for doubtful accounts, which is based on its historical collection experience, current trends, credit policies, specific customer collection issues, and accounts receivable aging categories. In determining this allowance, the Company looks at historical write-offs of its receivables. The Company also looks at current trends in the credit quality of its customer base as well as changes in its credit policies. The Company performs ongoing credit evaluations of its customers and adjusts credit limits based upon payment history and each customer's current creditworthiness. The Company continuously monitors collections and payments from its customers. Account balances are charged off against the allowance when the Company believes it is probable the receivable will not be recovered. In some instances, the Company utilizes letters of credit to mitigate its credit exposure.

The changes in the allowance for doubtful accounts are as follows:



(In thousands)	December 30, 2017			December 31, 2016			January 2, 2016
Balance at Beginning of Year	$	2,395		$	2,163		$	2,198
Provision charged to expense	436			453			379
Accounts written off	(159		)	(128		)	(205		)
Currency translation	207			(93		)	(209		)
Balance at End of Year	$	2,879		$	2,395		$	2,163

The Company's Chinese subsidiaries may receive banker's acceptance drafts from customers as payment for their trade accounts receivable. The banker's acceptance drafts are noninterest bearing obligations of the issuing bank and mature within six months of the origination date. The Company's subsidiaries may sell the drafts at a discount to a third-party financial institution or transfer the drafts to vendors in settlement of current accounts payable prior to the scheduled maturity date. These drafts, which totaled $15,960,000 at year-end 2017 and $7,852,000 at year-end 2016, are included in accounts receivable in the accompanying consolidated balance sheet until the subsidiary sells the drafts to a bank and receives a discounted amount, transfers the banker's acceptance drafts in settlement of current accounts payable prior to maturity, or obtains cash payment on the scheduled maturity date.

Warranty Obligations

The Company provides for the estimated cost of product warranties at the time of sale based on the historical occurrence rates and repair costs, as well as knowledge of any specific warranty problems that indicate projected warranty costs may vary from historical patterns. The Company typically negotiates the terms regarding warranty coverage and length of warranty depending on the products and applications. While the Company engages in extensive product quality programs and processes, the Company's warranty obligation is affected by product failure rates, repair costs, service delivery costs incurred in correcting a product failure, and supplier warranties on parts delivered to the Company. Should these factors or actual results differ from the Company's estimates, revisions to the estimated warranty liability would be required.

The changes in the carrying amount of accrued warranty costs included in other current liabilities in the accompanying consolidated balance sheet are as follows:



(In thousands)	December 30, 2017			December 31, 2016
Balance at Beginning of Year	$	3,843		$	3,670
Provision charged to expense	2,652			3,091
Usage	(2,225		)	(3,632		)
Acquisitions	790			991
Currency translation	438			(277		)
Balance at End of Year	$	5,498		$	3,843

Income Taxes

In accordance with ASC 740, "Income Taxes," (ASC 740), the Company recognizes deferred income taxes based on the expected future tax consequences of differences between the financial statement basis and the tax basis of assets and liabilities, calculated using enacted tax rates in effect for the year in which these differences are expected to reverse. A tax valuation allowance is established, as needed, to reduce deferred tax assets to the amount expected to be realized. In the period in which it becomes more likely than not that some or all of the deferred tax assets will be realized, the valuation allowance will be adjusted.

It is the Company's policy to provide for uncertain tax positions and the related interest and penalties based upon management's assessment of whether a tax benefit is more likely than not to be sustained upon examination by tax authorities. The Company recognizes accrued interest and penalties related to unrecognized tax benefits in the provision for income taxes. At December 30, 2017, the Company believes that it has appropriately accounted for any liability for unrecognized tax benefits. To the extent the Company prevails in matters for which a liability for an unrecognized tax benefit is established, the statute of limitations expires for a tax jurisdiction year, or the Company is required to pay amounts in excess of the liability, its effective tax rate in a given financial statement period may be affected.

Earnings per Share

Basic earnings per share (EPS) is computed by dividing net income attributable to Kadant by the weighted average number of shares outstanding during the year. Diluted EPS is computed using the treasury stock method assuming the effect of all potentially dilutive securities, including stock options, restricted stock units (RSUs) and employee stock purchase plan shares.

Cash and Cash Equivalents

At year-end 2017 and year-end 2016, the Company's cash equivalents included investments in money market funds and other marketable securities, which had maturities of three months or less at the date of purchase. The carrying amounts of cash equivalents approximate their fair values due to the short-term nature of these instruments.

Restricted Cash

The Company had restricted cash of $1,421,000 at year-end 2017 and $2,082,000 at year-end 2016. This cash serves as collateral for bank guarantees primarily associated with providing assurance to customers that the Company will fulfill certain customer obligations entered into in the normal course of business. The majority of the bank guarantees will expire by the end of 2018.

Supplemental Cash Flow Information



(In thousands)	December 30, 2017			December 31, 2016			January 2, 2016
Cash Paid for Interest	$	2,624		$	1,183		$	616
Cash Paid for Income Taxes, Net of Refunds	$	20,559		$	15,632		$	11,497

Non-Cash Investing Activities:
Fair value of assets of acquired	$	242,048		$	84,969		$	—
Cash paid for acquired businesses	(206,950		)	(58,894		)	—
Liabilities assumed of acquired businesses	$	35,098		$	26,075		$	—

Non-cash additions to property, plant, and equipment	$	4,620		$	379		$	614

Non-Cash Financing Activities:
Issuance of Company common stock upon vesting of RSUs	$	3,192		$	3,463		$	3,423
Dividends declared but unpaid	$	2,316		$	2,078		$	1,831

Inventories

Inventories are stated at the lower of cost (on a first-in, first-out; or weighted average basis) or net realizable value and include materials, labor, and manufacturing overhead. The Company regularly reviews its quantities of inventories on hand and compares these amounts to the historical and forecasted usage of and demand for each particular product or product line. The Company records a charge to cost of revenues for excess and obsolete inventory to reduce the carrying value of inventories to net realizable value.

The components of inventories are as follows:



(In thousands)	December 30, 2017		December 31, 2016
Raw Materials and Supplies	$	38,952	$	21,086
Work in Process	18,203		12,293
Finished Goods (includes $1,883 and $1,249 at customer locations)	27,778		21,572
	$	84,933	$	54,951

Property, Plant, and Equipment

Property, plant, and equipment are stated at cost. The costs of additions and improvements are capitalized, while maintenance and repairs are charged to expense as incurred. The Company provides for depreciation and amortization primarily using the straight-line method over the estimated useful lives of the property as follows: buildings, 10 to 40 years; machinery and equipment, 2 to 10 years; and leasehold improvements, the shorter of the term of the lease or the life of the asset. For construction in progress, no provision for depreciation is made until the assets are available and ready for use.

Property, plant, and equipment consist of the following:



(In thousands)	December 30, 2017		December 31, 2016
Land	$	7,894	$	4,827
Buildings	48,094		39,706
Machinery, Equipment, and Leasehold Improvements	94,779		78,953
Construction in Progress	14,464		938
	165,231		124,424
Less: Accumulated Depreciation and Amortization	85,508		76,720
	$	79,723	$	47,704

At year-end 2017, the construction in progress primarily relates to the construction of a manufacturing facility in the U.S. that will be completed in the first half of 2018, at which time the assets will be transferred to building and machinery and equipment and depreciated over their estimated useful lives.

Property, plant, and equipment at year-end 2017 and year-end 2016 included assets under capital leases. The gross amount of property, plant, and equipment under capital leases was $6,038,000 at year-end 2017 and $5,335,000 at year-end 2016. Accumulated amortization associated with capital leases was $550,000 at year-end 2017 and $221,000 at year-end 2016. Depreciation and amortization expense, including amortization of assets under capital lease, was $7,418,000 in 2017, $6,194,000 in 2016, and $5,814,000 in 2015.

Intangible Assets, Net

Acquired intangible assets by major asset class are as follows:



(In thousands)	Gross		Currency Translation			Accumulated Amortization			Net
December 30, 2017
Definite-Lived
Customer relationships	$	113,301	$	(621	)	$	(28,789	)	$	83,891
Product technology	46,501		(737		)	(19,841		)	25,923
Tradenames	5,227		(262		)	(1,504		)	3,461
Other	13,754		(35		)	(10,863		)	2,856
	178,783		(1,655		)	(60,997		)	116,131
Indefinite-Lived
Tradenames	16,600		305			—			16,905
Acquired Intangible Assets	$	195,383	$	(1,350	)	$	(60,997	)	$	133,036

December 31, 2016
Definite-Lived
Customer relationships	$	59,101	$	(5,202	)	$	(21,805	)	$	32,094
Product technology	27,101		(2,052		)	(17,105		)	7,944
Tradenames	4,447		(591		)	(1,065		)	2,791
Other	11,094		(228		)	(9,065		)	1,801
	101,743		(8,073		)	(49,040		)	44,630
Indefinite-Lived
Tradenames	8,100		—			—			8,100
Acquired Intangible Assets	$	109,843	$	(8,073	)	$	(49,040	)	$	52,730

Intangible assets are initially recorded at fair value at the date of acquisition and are stated net of accumulated amortization and currency translation in the accompanying consolidated balance sheet. The Company amortizes definite-lived intangible assets over lives that have been determined based on the anticipated cash flow benefits of the intangible asset. Definite-lived intangible assets have a weighted average amortization period of 12 years. Amortization of intangible assets was $11,957,000 in 2017, $8,132,000 in 2016, and $5,007,000 in 2015. The estimated future amortization expense of definite-lived intangible assets is $14,409,000 in 2018; $13,482,000 in 2019; $12,882,000 in 2020; $12,340,000 in 2021; $11,536,000 in 2022; and $51,482,000 in the aggregate thereafter.

Goodwill

Goodwill represents the excess of the cost of an acquisition over the fair value of the identifiable net assets of the acquired business at the date of acquisition. The Company’s acquisitions have historically been made at prices above the fair value of the acquired net assets, resulting in goodwill, due to the expectation of synergies from combining the businesses.

The changes in the carrying amount of goodwill by segment are as follows:



(In thousands)	Papermaking Systems Segment			Wood Processing Systems Segment		Total
Balance as of January 2, 2016
Gross balance	$	187,720		$	16,840	$	204,560
Accumulated impairment losses	(85,509		)	—		(85,509		)
Net balance	102,211			16,840		119,051
2016 Adjustments
Acquisition (Note 2)	38,552			—		38,552
Currency Translation	(6,573		)	425		(6,148		)
Total 2016 Adjustments	31,979			425		32,404
Balance at December 31, 2016
Gross balance	219,699			17,265		236,964
Accumulated impairment losses	(85,509		)	—		(85,509		)
Net balance	134,190			17,265		151,455
2017 Adjustments
Acquisitions (Note 2)	16,373			85,508		101,881
Currency Translation	10,942			3,723		14,665
Total 2017 Adjustments	27,315			89,231		116,546
Balance at December 30, 2017
Gross balance	247,014			106,496		353,510
Accumulated impairment losses	(85,509		)	—		(85,509		)
Net balance	$	161,505		$	106,496	$	268,001

Impairment of Long-Lived Assets

The Company evaluates the recoverability of goodwill and indefinite-lived intangible assets as of the end of each fiscal year, or more frequently if events or changes in circumstances, such as a significant decline in sales, earnings, or cash flows, or material adverse changes in the business climate, indicate that the carrying value of an asset might be impaired. In 2017, the Company adopted the Financial Accounting Standards Board's (FASB) Accounting Standards Update (ASU) No. 2017-04, Intangibles - Goodwill and Other (Topic 350), Simplifying the Test for Goodwill Impairment, which eliminates Step 2 in goodwill impairment testing. See the related topic in "Recent Accounting Pronouncements" in this section for further details.

At year-end 2017 and year-end 2016, the Company performed a qualitative impairment analysis of its goodwill and determined that the asset was not impaired. The impairment analysis included an assessment of certain qualitative factors including, but not limited to, the results of prior fair value calculations, the movement of the Company's share price and market capitalization, the reporting unit and overall financial performance, and macroeconomic and industry conditions. The Company considered the qualitative factors and weighed the evidence obtained, and determined that it was not more likely than not that the fair value of any of the assets was less than its carrying amount. Although the Company believes the factors considered in the impairment analysis are reasonable, significant changes in any one of the assumptions used could have produced a different result.

Goodwill by reporting unit is as follows:



(In thousands)	December 30, 2017		December 31, 2016
Stock-Preparation	$	60,275	$	54,751
Doctoring, Cleaning, & Filtration	35,941		33,839
Fluid-Handling	65,289		45,600
Wood Processing Systems	106,496		17,265
	$	268,001	$	151,455

At year-end 2017 and year-end 2016, the Company performed a quantitative impairment analysis on its indefinite-lived intangible assets and determined that the assets were not impaired.

The Company assesses its long-lived assets, other than goodwill and indefinite-lived intangible assets, for impairment whenever facts and circumstances indicate that the carrying amounts may not be fully recoverable. To analyze recoverability, the Company projects undiscounted net future cash flows over the remaining lives of such assets or asset groups. If these projected cash flows were to be less than the carrying amounts, an impairment loss would be recognized, resulting in a write-down of the assets with a corresponding charge to earnings. The impairment loss would be measured based upon the difference between the carrying amounts and the fair values of the assets. No indicators of impairment were identified in 2017 or 2016.

Foreign Currency Translation and Transactions

All assets and liabilities of the Company's foreign subsidiaries are translated at fiscal year-end exchange rates, and revenues and expenses are translated at average exchange rates for each quarter in accordance with ASC 830, "Foreign Currency Matters." Resulting translation adjustments are reflected in the "accumulated other comprehensive items" (AOCI) component of stockholders' equity (see Note 13). Foreign currency transaction gains and losses are included in the accompanying consolidated statement of income and are not material in the three years presented.

Stock-Based Compensation

The Company recognizes compensation cost for all stock-based awards granted to employees and directors based on the grant date estimate of fair value for those awards. The fair value of RSUs is based on the grant date trading price of the Company's common stock, reduced by the present value of estimated dividends foregone during the requisite service period. The fair value of stock options is based on the Black-Scholes option-pricing model. For stock options and time-based RSUs, compensation expense is recognized ratably over the requisite service period for the entire award net of forfeitures. For performance-based RSUs, compensation expense is recognized ratably over the requisite service period for each separately-vesting portion of the award net of forfeitures and remeasured at each reporting period until the total number of RSUs to be issued is known. Compensation expense related to any modified stock-based awards is based on the fair value for those awards as of the modification date with any remaining incremental compensation expense recognized ratably over the remaining requisite service period.

Derivatives

The Company uses derivative instruments primarily to reduce its exposure to changes in currency exchange rates and interest rates. When the Company enters into a derivative contract, the Company makes a determination as to whether the transaction is deemed to be a hedge for accounting purposes. For a contract deemed to be a hedge, the Company formally documents the relationship between the derivative instrument and the risk being hedged. In this documentation, the Company specifically identifies the asset, liability, forecasted transaction, cash flow, or net investment that has been designated as the hedged item, and evaluates whether the derivative instrument is expected to reduce the risks associated with the hedged item. To the extent these criteria are not met, the Company does not use hedge accounting for the derivative. The changes in the fair value of a derivative not deemed to be a hedge are recorded currently in earnings. The Company does not hold or engage in transactions involving derivative instruments for purposes other than risk management.

ASC 815, "Derivatives and Hedging," requires that all derivatives be recognized on the balance sheet at fair value. For derivatives designated as cash flow hedges, the related gains or losses on these contracts are deferred as a component of AOCI. These deferred gains and losses are recognized in the period in which the underlying anticipated transaction occurs. For derivatives designated as fair value hedges, the unrealized gains and losses resulting from the impact of currency exchange rate movements are recognized in earnings in the period in which the exchange rates change and offset the currency gains and losses on the underlying exposures being hedged. The Company performs an evaluation of the effectiveness of the hedge both at inception and on an ongoing basis. The ineffective portion of a hedge, if any, and changes in the fair value of a derivative not deemed to be a hedge, are recorded in the consolidated statement of income.

Recent Accounting Pronouncements

Revenue from Contracts with Customers (Topic 606), Section A-Summary and Amendments That Create Revenue from Contracts with Customers (Topic 606) and Other Assets and Deferred Costs-Contracts with Customers (Subtopic 340-40). In May 2014, the FASB issued ASU No. 2014-09, which requires an entity to recognize the amount of revenue to which it expects to be entitled for the transfer of promised goods or services to customers. The new guidance provides a five-step model to assess transactions to determine when and how much revenue is recognized. The ASU will replace most existing revenue recognition guidance in GAAP. In March 2016, the FASB issued ASU No. 2016-08, which further clarifies the guidance on the principal versus agent considerations within ASU No. 2014-09. In April 2016, the FASB issued ASU No. 2016-10 to expand the guidance on identifying performance obligations and licensing within ASU 2014-09. In May 2016, the FASB issued ASU No. 2016-11, which rescinds certain previously-issued guidance, including, among other items, guidance relating to accounting for shipping and handling fees and freight services effective upon adoption of ASU No. 2014-09. Also in May 2016, the FASB issued ASU No. 2016-12, which narrowly amended the revenue recognition guidance regarding collectability, noncash consideration, presentation of sales tax and transition. In December 2016, the FASB issued ASU No. 2016-20, which clarifies narrow aspects of Topic 606 and corrects unintended application of the guidance.

The Company adopted these ASUs using the modified retrospective transition approach beginning in fiscal 2018. Under this approach, the guidance applies to all new contracts initiated in fiscal 2018. For existing contracts that have remaining obligations as of the beginning of fiscal 2018, any difference between the recognition criteria in these ASUs and the Company's current revenue recognition practices were recognized using a cumulative-effect adjustment to decrease retained earnings by approximately $100,000 to $300,000. This impact includes a reduction of retained earnings associated with certain contracts which were previously accounted for under the percentage-of-completion method of accounting, but do not meet the requirements for over time recognition under Topic 606. Amounts previously recognized in fiscal 2017 based on percentage-of-completion will be deferred at the beginning of fiscal 2018 and will be recognized along with the remaining revenue and costs in fiscal 2018 when control of the asset has been transferred to the customer. Partially offsetting this is an increase in retained earnings primarily related to contracts, which meet the over time criteria under the new revenue standard and, as a result, the portion of the contract completed as of the beginning of fiscal 2018 was recognized immediately in retained earnings.

The Company is substantially complete with its contract and business process review and has implemented changes to its controls to support the recognition criteria and disclosure requirements of these ASUs.

Inventory (Topic 330), Simplifying the Measurement of Inventory. In July 2015, the FASB issued ASU No. 2015-11, which requires that an entity measure inventory within the scope of this ASU at the lower of cost or net realizable value. Net realizable value is the estimated selling price in the ordinary course of business, less reasonably predictable costs of completion, disposal, and transportation. Substantial and unusual losses that result from subsequent measurement of inventory should be disclosed in the financial statements. The Company adopted this ASU at the beginning of fiscal 2017 with no impact on the Company's consolidated financial statements.

Leases (Topic 842). In February 2016, the FASB issued ASU No. 2016-02, which requires a lessee to recognize a right-of-use asset and a lease liability for operating leases, initially measured at the present value of the future lease payments, in its balance sheet. This ASU also requires a lessee to recognize a single lease cost, calculated so that the cost of the lease is allocated over the lease term, generally on a straight-line basis. This new guidance is effective for the Company in fiscal 2019. Early adoption is permitted. As part of the implementation of this new standard, the Company is in the process of reviewing current accounting policies and assessing the practical expedients allowed under this new guidance. The Company expects that most of its operating lease commitments will be subject to the new standard and recognized as operating lease liabilities and right-of-use assets upon adoption. The Company is required to use the modified retrospective transition method upon adoption. This ASU will require that the Company update its systems, processes and controls to account for its leases. The Company is currently evaluating the other effects that the adoption of this ASU will have on its consolidated financial statements, as well as on its systems, processes and controls.

Financial Instruments - Credit Losses (Topic 326), Measurement of Credit Losses on Financial Instruments. In June 2016, the FASB issued ASU No. 2016-13, which significantly changes the way entities recognize impairment of many financial assets by requiring immediate recognition of estimated credit losses expected to occur over their remaining lives. This new guidance is effective for the Company in fiscal 2020. Early adoption is permitted beginning in fiscal 2019. The Company is currently evaluating the effects that the adoption of this ASU will have on its consolidated financial statements.

Statement of Cash Flows (Topic 230), Classification of Certain Cash Receipts and Cash Payments. In August 2016, the FASB issued ASU No. 2016-15, which simplifies the diversity in practice related to the presentation and classification of certain cash receipts and cash payments in the statement of cash flows under Topic 230. This ASU addresses the following eight specific cash flow issues: debt prepayment or debt extinguishment costs; settlement of zero-coupon debt instruments or other debt instruments with coupon interest rates that are insignificant in relation to the effective interest rate of the borrowing; contingent consideration payments made after a business combination; proceeds from the settlement of insurance claims; proceeds from the settlement of corporate-owned life insurance; distributions received from equity method investees; beneficial interests in securitization transactions; and separately identifiable cash flows and application of the predominance principle. The Company adopted this ASU at the beginning of fiscal 2018 with no impact on the Company's consolidated statement of cash flows.

Income Taxes (Topic 740), Intra-Entity Transfers of Assets Other Than Inventory. In October 2016, the FASB issued ASU No. 2016-16, which requires an entity to recognize the income tax consequences of an intra-entity transfer of an asset other than inventory when the transfer occurs and eliminates the exception for an intra-entity transfer of an asset other than inventory. The Company adopted this ASU at the beginning of fiscal 2018 on a modified retrospective basis, which did not have a material effect on its consolidated financial statements.

Statement of Cash Flows (Topic 230), Restricted Cash. In November 2016, the FASB issued ASU No. 2016-18, which requires inclusion of restricted cash and restricted cash equivalents within cash and cash equivalents when reconciling the beginning-of-period and end-of-period total amounts shown on the statement of cash flows. The Company adopted this ASU at the beginning of fiscal 2018 and will apply the changes to the consolidated statement of cash flows retrospectively.

Business Combinations (Topic 805), Clarifying the Definition of a Business. In January 2017, the FASB issued ASU No. 2017-01, which clarifies the definition of a business with the objective of adding guidance to assist entities with evaluating whether transactions should be accounted for as acquisitions or disposals of assets or businesses. The revised definition of a business under this ASU will reduce the number of transactions that are accounted for as business combinations. The Company adopted this ASU on a prospective basis at the beginning of fiscal 2018. The adoption of this ASU will impact how the Company assesses acquisitions and disposals of businesses in the future.

Intangibles - Goodwill and Other (Topic 350), Simplifying the Test for Goodwill Impairment. In January 2017, the FASB issued ASU No. 2017-04, which eliminates Step 2 in goodwill impairment testing, which requires that goodwill impairment losses be measured as the difference between the implied value of a reporting unit’s goodwill and its carrying amount. This ASU will reduce the cost and complexity of impairment testing by requiring goodwill impairment losses to be measured as the excess of the reporting unit’s carrying amount, including goodwill and related goodwill tax effects, over its fair value. The Company adopted this ASU on a prospective basis in the fourth quarter of fiscal 2017 with no impact on the Company's consolidated financial statements.

Compensation - Retirement Benefits (Topic 715): Improving the Presentation of Net Periodic Pension Cost and Net Periodic Post-retirement Benefit Cost. In March 2017, the FASB issued ASU No. 2017-07, which requires employers to include only the service cost component of net periodic pension cost and net periodic post-retirement benefit cost in operating expenses in the same income statement line item as the related employees' compensation costs. The other components of net benefit cost, including interest costs, amortization of prior service costs and settlement and curtailment effects, are to be included in non-operating expenses. The Company adopted this ASU at the beginning of fiscal 2018 and prior periods will be restated with no impact on the Company’s consolidated net income.

Compensation - Stock Compensation (Topic 718): Scope of Modification Accounting. In May 2017, the FASB issued ASU No. 2017-09, which provides clarity on which changes to the terms or conditions of share-based payment awards require entities to apply the modification accounting provisions required in Topic 718. The Company adopted this ASU on a prospective basis at the beginning of fiscal 2018. The adoption of this ASU did not have a material impact on the Company's consolidated financial statements.

Derivatives and Hedging (Topic 815): Targeted Improvements in Accounting for Hedging Activity. In August 2017, the FASB issued ASU No. 2017-12, which provides improvements to current hedge accounting to better portray the economic results of an entity’s risk management activities and to simplify the application of current hedge accounting guidance. This new guidance is effective on a prospective basis for the Company in fiscal 2019. Early adoption is permitted. The Company does not believe that adoption of this ASU will have a material effect on its consolidated financial statements.

Income Statement - Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income. In February 2018, the FASB issued ASU No. 2018-02, which allows a reclassification from AOCI to retained earnings for stranded tax effects resulting from the Tax Cuts and Jobs Act of 2017 enacted on December 22, 2017. The reclassification is elective and would allow the income tax effects on items that were originally recorded in AOCI be reclassified from AOCI to retained earnings. This ASU is effective for the Company in fiscal year 2019 and interim periods therein and should be applied either at the beginning of the period of adoption or retrospectively to each period in which the income tax effects of the Tax Cuts and Jobs Act of 2017 are recognized. Early adoption is permitted. The Company is currently evaluating the effects that the adoption of this ASU will have on its consolidated financial statements.

Acquisitions

12 Months Ended

Dec. 30, 2017

Business Combinations [Abstract]

Acquisitions

The Company’s acquisitions are accounted for using the purchase method of accounting and their results are included in the accompanying financial statements from their respective dates of acquisition. Historically, the Company’s acquisitions have been made at prices above the fair value of identifiable net assets, resulting in goodwill. Acquisition transaction costs are included in selling, general, and administrative expenses (SG&A) in the accompanying consolidated statement of income as incurred. The Company recorded acquisition transaction costs of $5,375,000 in 2017 and $1,832,000 in 2016.

2017

On August 14, 2017, the Company acquired certain assets of Unaflex, LLC (Unaflex) for $31,274,000 in cash, subject to a post-closing adjustment. The Company funded the acquisition through borrowings under its revolving credit facility. Unaflex, located principally in South Carolina, is a leading manufacturer of expansion joints and related products for process industries. Revenues for Unaflex were $17,494,000 for the twelve months ended December 31, 2016. This acquisition complements the Company’s existing Fluid-Handling product line within the Company’s Papermaking Systems segment. The Company expects several synergies in connection with this acquisition, including expanding sales of products offered by Unaflex by leveraging the Company’s sales efforts, as well as sourcing and manufacturing efficiencies. Goodwill from the Unaflex acquisition was $15,657,000, all of which is expected to be deductible for tax purposes. For 2017, the Company recorded revenues of $7,335,000 and operating income of $187,000 for Unaflex from its date of acquisition. Included in operating income was amortization expense of $176,000 associated with acquired profit in inventory.

On July 5, 2017, the Company acquired the forest products business of NII FPG Company (NII FPG) pursuant to a Stock and Asset Purchase Agreement dated May 24, 2017, for $170,792,000, net of cash acquired. In connection with the acquisition, the Company borrowed an aggregate $170,018,000 under its revolving credit facility, including $62,690,000 of Canadian dollar-denominated and $61,769,000 of euro-denominated borrowings. NII FPG, which has two primary manufacturing facilities located in Canada and Finland, is a global leader in the design and manufacture of equipment used by sawmills, veneer mills, and other manufacturers in the forest products industry. NII FPG also designs and manufactures logging equipment used in harvesting timber from forest plantations. Revenues for NII FPG were approximately $81,000,000 for the twelve months ended December 31, 2016. This acquisition extends the Company's presence deeper into the forest products industry and complements its existing Wood Processing Systems segment. The Company expects several synergies in connection with this acquisition, including expansion of product sales at the Company's existing businesses by leveraging NII FPG's geographic presence, as well as sourcing and manufacturing efficiencies. Goodwill from the NII FPG acquisition was $85,508,000, of which $33,228,000 is expected to be deductible for tax purposes. For 2017, the Company recorded revenues of $48,363,000 and operating income of $1,238,000 for NII FPG from its date of acquisition. Included in operating income was amortization expense of $6,399,000 associated with acquired profit in inventory and backlog.

In addition, the Company paid $2,500,000 in cash for another acquisition in the fourth quarter of 2017 within the Papermaking Systems segment.

The following table summarizes the estimated fair values of assets acquired and liabilities assumed and the purchase price of the Company's 2017 acquisitions. The purchase price allocation is based upon preliminary information and is subject to change if additional information about the facts and circumstances that existed at the acquisition date becomes available. The final determination of fair value of the assets acquired and liabilities assumed may result in adjustments to the assets and liabilities, including goodwill. During the year ended December 30, 2017, the Company made certain adjustments to its purchase price allocation primarily to adjust working capital, which resulted in a $1,282,000 increase to goodwill initially recorded. Any subsequent measurement period adjustments are not expected to have a material impact on the Company's results of operations.



	NII FPG		Unaflex		Other
(In thousands)	July 5, 2017		August 14, 2017		October 30, 2017		Total

Net Assets Acquired:
Cash and Cash Equivalents	$	2,219	$	—	$	—	$	2,219
Accounts Receivable	6,542		2,079		—		8,621
Inventories	25,246		1,704		—		26,950
Property, Plant, and Equipment	12,912		1,194		284		14,390
Other Assets	2,375		72		—		2,447
Definite-Lived Intangible Assets
Customer relationships	44,700		8,000		1,500		54,200
Product technology	17,100		2,300		—		19,400
Other	2,540		900		—		3,440
Indefinite-Lived Intangible Assets
Tradenames	8,500		—		—		8,500
Goodwill	85,508		15,657		716		101,881
Total assets acquired	207,642		31,906		2,500		242,048

Accounts Payable	4,970		358		—		5,328
Customer Deposits	7,396		100		—		7,496
Long-Term Deferred Income Taxes	16,668		—		—		16,668
Other Liabilities	5,597		174		—		5,771
Total liabilities assumed	34,631		632		—		35,263
Net assets acquired	$	173,011	$	31,274	$	2,500	$	206,785

Purchase Price:
Cash Paid	$	2,993	$	—	$	—	$	2,993
Cash Paid to Seller Borrowed Under the Revolving Credit Facility	170,018		31,274		2,500		203,792
Total purchase price	$	173,011	$	31,274	$	2,500	$	206,785

For NII FPG, the weighted-average amortization period for definite-lived intangible assets acquired is 12 years, including weighted-average amortization periods of 15 years for product technology, 11 years for customer relationships, and 4 years for other intangible assets. For Unaflex, the weighted average amortization period for definite-lived intangible assets acquired, including customer relationships, product technology and other intangible assets, is 10 years. For the other acquisition, the amortization period for customer relationships is 11 years.

Unaudited Supplemental Pro Forma Information

Had the acquisitions of NII FPG and Unaflex been completed as of the beginning of 2016, the Company’s pro forma results of operations for 2017 and 2016 would have been as follows:



(In thousands, except per share amounts)	December 30, 2017		December 31, 2016
Revenues	$	565,710	$	508,832

Net Income Attributable to Kadant	$	44,159	$	30,638

Earnings per Share Attributable to Kadant:
Basic	$	4.02	$	2.82
Diluted	$	3.90	$	2.75

Pro forma results include the following non-recurring pro forma adjustments that were directly attributable to the business combinations:


•	Pre-tax charge to SG&A expenses of $5,360,000 in 2016 and reversal in 2017, for acquisition transaction costs.


•	Estimated pre-tax charge to cost of revenues of $5,137,000 in 2016 and reversal in 2017, for the sale of inventory revalued at the date of acquisition.


•	Estimated pre-tax charge to SG&A expenses of $1,669,000 in 2016 and reversal of $1,438,000 in 2017, for intangible asset amortization related to acquired backlog.


•	Reversal of pre-tax income of $852,000 in 2017, related to NII FPG's gain on the sale of a building.

These pro forma results of operations have been prepared for comparative purposes only, and they do not purport to be indicative of the results of operations that would have resulted had the acquisitions of NII FPG and Unaflex occurred as of the beginning of 2016, or that may result in the future. The Company's pro forma results including its other acquisition would not have been materially different from the pro forma results presented above had it occurred at the beginning of 2016.

2016

On April 4, 2016, the Company acquired all the outstanding shares of RT Holding GmbH, the parent corporation of a group of companies known as the PAALGROUP (PAAL) for 49,713,000 euros, net of cash acquired, or $56,617,000, pursuant to a post-closing adjustment. The Company paid additional consideration of $165,000 to the sellers in 2017. In connection with the acquisition, the Company borrowed $29,866,000 as a euro-denominated borrowing under its revolving credit facility. The remainder of the purchase price was funded from the Company's internal overseas cash.

PAAL, which has operations in Germany, the United Kingdom, France and Spain, manufactures balers and related equipment used in the processing of recyclable and waste materials. This acquisition, which is included in the Company's Papermaking Systems segment's Stock-Preparation product line, broadened the Company's product portfolio and extended its presence deeper into recycling and waste management. The Company anticipated and continues to achieve several synergies in connection with this acquisition, including expanding sales of the products of the acquired business by leveraging the Company's geographic presence to enter or further penetrate existing markets, as well as sourcing and manufacturing efficiencies. Goodwill from the PAAL acquisition was $38,552,000, which is not deductible for tax purposes. For 2016, Company recorded revenues of $40,783,000 and operating income of $2,372,000 for PAAL from its date of acquisition. Included in operating income was amortization expense of $1,926,000 associated with acquired inventory and backlog.

The following table summarizes the estimated fair values of assets acquired and liabilities assumed and the purchase price of PAAL.



	PAAL
(In thousands)	April 4, 2016

Net Assets Acquired:
Cash and Cash Equivalents	$	2,277
Accounts Receivable	5,441
Inventories	3,947
Property, Plant, and Equipment	7,179
Other Assets	2,882
Definite-Lived Intangible Assets
Customer relationships	15,831
Product technology	4,203
Tradenames	2,278
Other	2,379
Goodwill	38,552
Total assets acquired	84,969

Accounts Payable	5,536
Customer Deposits	2,471
Obligations Under Capital Lease	4,842
Long-Term Deferred Income Taxes	6,148
Other Liabilities	6,913
Total liabilities assumed	25,910
Net assets acquired	$	59,059

Purchase Price:
Cash	$	29,193
Cash Paid to Seller Borrowed Under the Revolving Credit Facility	29,866
Total purchase price	$	59,059

For the PAAL acquisition, the weighted-average amortization period for definite-lived intangible assets acquired is 12 years, including weighted-average amortization periods of 13 years for customer relationships, 9 years for product technology, 14 years for tradenames, and 7 years for other intangible assets.

Unaudited Supplemental Pro Forma Information

Had the acquisition of PAAL been completed as of the beginning of 2015, the Company’s pro forma results of operations for 2016 and 2015 would have been as follows:



(In thousands, except per share amounts)	December 31, 2016		January 2, 2016
Revenues	$	427,273	$	444,350

Net Income Attributable to Kadant	$	35,321	$	33,881

Earnings per Share Attributable to Kadant:
Basic	$	3.25	$	3.12
Diluted	$	3.17	$	3.05

Pro forma results include the following non-recurring pro forma adjustments that were directly attributable to the business combination:


•	Pre-tax charge to SG&A expenses of $1,832,000 in 2015 and reversal in 2016, for acquisition transaction costs.


•	Estimated pre-tax charge to cost of revenues of $458,000 in 2015 and reversal in 2016, for the sale of inventory revalued at the date of acquisition.


•	Estimated pre-tax charge to SG&A expenses of $1,468,000 in 2015 and reversal in 2016, for intangible asset amortization related to acquired backlog.


•	Reversal of $1,636,000 of interest expense in 2015 and $454,000 in 2016 related to pre-acquisition debt, which was settled in the acquisition.

Employee Benefit Plans

12 Months Ended

Dec. 30, 2017

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Employee Benefit Plans

Stock-Based Compensation Plans

The Company maintains stock-based compensation plans primarily for its key employees and directors, although the plans permit awards to others expected to make significant contributions to the future of the Company. The plans authorize the compensation committee of the Company's board of directors (the board committee) to award a variety of stock and stock-based incentives, such as restricted stock, RSUs, nonqualified and incentive stock options, stock bonus shares, or performance-based shares. The award recipients and the terms of awards, including price, granted under these plans are determined by the board committee. Upon a change of control, as defined in the plans, all options or other awards become fully vested and all restrictions lapse. The Company had 486,681 shares available for grant under stock-based compensation plans at year-end 2017. The Company generally issues its common stock out of treasury stock, to the extent available, for share issuances related to its stock-based compensation plans.

The components of pre-tax stock-based compensation expense included in SG&A expenses in the accompanying consolidated statement of income are as follows:



(In thousands)	December 30, 2017		December 31, 2016		January 2, 2016
Restricted Stock Unit Awards	$	5,621	$	4,848	$	5,185
Employee Stock Purchase Plan Awards	182		170		136
Stock Option Awards	—		51		420
Total	$	5,803	$	5,069	$	5,741

Prior to 2016, the Company elected to recognize excess income tax benefits from stock option exercises and the vesting of RSUs in capital in excess of par value using the tax return ordering approach. The Company measured the tax benefit associated with excess tax deductions related to stock-based compensation expense by multiplying the excess tax deductions by the statutory tax rates. The Company recognized income tax benefits in capital in excess of par value of $881,000 in 2015 associated with stock-based compensation. As a result of the adoption of ASU No. 2016-09 in 2016, the Company did not recognize any income tax benefits in capital in excess of par value in 2017 and 2016.

The Company grants RSUs to non-employee directors and certain employees. Holders of RSUs have no voting rights and are not entitled to receive cash dividends.

Non-Employee Director Restricted Stock Units

The Company granted 3,000 RSUs in 2017 and 5,000 RSUs in 2016 and 2015 to each of its non-employee directors. The RSUs vested ratably on the last day of each fiscal quarter within the year.

The Company also granted 10,000 cash-settled RSUs to each of its non-employee directors in March 2015, which totaled 50,000 in the aggregate and had a grant date fair value of $2,279,000. No compensation expense was recognized as the RSUs would only have vested if a change in control as defined in the Company's 2006 equity incentive plan had occurred before the last day of the first quarter of 2020. During 2015, 10,000 RSUs were forfeited, and the remaining 40,000 RSUs were outstanding at year-end 2016. These remaining cash-settled RSUs were canceled without value in March 2017.

Performance-Based Restricted Stock Units

The Company grants performance-based RSUs to certain officers of the Company. Each performance-based RSU represents the right to receive one share of the Company's common stock upon vesting. The RSUs are subject to adjustment based on the achievement of a performance measure selected for the fiscal year, which historically has been a specified target for adjusted earnings before interest, taxes, depreciation, and amortization (adjusted EBITDA) generated from continuing operations. Following adjustment, the RSUs are subject to additional time-based vesting, and vest in three equal annual installments, provided that the officer is employed by the Company on the applicable vesting dates.

The Company recognizes compensation expense associated with performance-based RSUs ratably over the requisite service period for each separately-vesting portion of the award based on the grant date fair value, and net of actual forfeitures recorded when they occur. Compensation expense recognized is remeasured each reporting period until the total number of RSUs to be issued is known. Unrecognized compensation expense related to the unvested performance-based RSUs totaled approximately $2,124,000 at year-end 2017, and will be recognized over a weighted average period of 1.3 years.

The performance-based RSU agreements provide for forfeiture in certain events, such as voluntary or involuntary termination of employment, and for acceleration of vesting in certain events, such as death, disability or a change in control of the Company. If death, disability, or a change in control occurs prior to the end of the performance period, the officer will receive the target RSU amount; otherwise, the officer will receive the number of deliverable RSUs based on the achievement of the performance goal, as stated in the RSU agreements.

Time-Based Restricted Stock Units

The Company grants time-based RSUs to its officers and other employees of the Company. Each time-based RSU represents the right to receive one share of the Company's common stock upon vesting. The Company recognizes compensation expense associated with these time-based RSUs ratably over the requisite service period for the entire award based on the grant date fair value, and net of actual forfeitures recorded when they occur. The time-based RSU agreement provides for forfeiture in certain events, such as voluntary or involuntary termination of employment, and for acceleration of vesting in certain events, such as death, disability, or a change in control of the Company. Unrecognized compensation expense related to the time-based RSUs totaled approximately $2,565,000 at year-end 2017, and will be recognized over a weighted average period of 1.8 years.

A summary of the activity of the Company's unvested RSUs in 2017 is as follows:



	Units (In thousands)		Weighted Average Grant- Date Fair Value
Unvested RSUs at December 31, 2016	203		$	40.23
Granted	110		$	59.30
Vested	(111	)	$	42.81
Forfeited / Expired	(3	)	$	43.75
Unvested RSUs at December 30, 2017	199		$	49.32

The weighted-average grant date fair value of RSUs granted was $59.30 in 2017, $40.41 in 2016, and $44.75 in 2015. The total fair value of shares vested was $6,719,000 in 2017, $6,233,000 in 2016, and $7,502,000 in 2015.

Stock Options

The Company did not grant stock options during the last three fiscal years. Prior to 2014, the Company granted nonqualified stock options to its executive officers that vested over three years and were not exercisable until vested. All options awarded in prior periods were granted at an exercise price equal to the fair market value of the Company's common stock on the date of grant. Stock options vested in three equal annual installments beginning on the first anniversary of the grant date, provided that the recipient remained employed by the Company on the applicable vesting dates and expire on the tenth anniversary of the grant date. All outstanding stock options are fully vested. The Company recognized compensation expense associated with these stock options ratably over the requisite service period for the entire award based on the grant date fair value, and net of forfeitures. There was no unrecognized compensation expense related to these stock options at year-end 2017.

The Black-Scholes option-pricing model was developed for use in estimating the fair value of traded options, which have no vesting restrictions and are fully transferable. In addition, option-pricing models require the input of highly subjective assumptions, including expected stock price volatility. Expected stock price volatility was calculated based on a review of the Company's actual historic stock prices commensurate with the expected life of the award. The expected option life was derived based on a review of the Company's historic option holding periods, including consideration of the holding period inherent in currently vested but unexercised options. The expected annual dividend rate was calculated by dividing the Company's annual dividend by the closing stock price on the grant date. The risk-free interest rate is based on the yield on zero-coupon U.S. Treasury securities for a period that is commensurate with the expected term of the option. The compensation expense recognized for these equity-based awards was net of estimated forfeitures. Forfeitures were estimated based on an analysis of actual option forfeitures.

A summary of the Company's stock option activity in 2017 is as follows:



(In thousands, except per share amounts)	Number of Shares	Weighted Average Exercise Price		Weighted Average Remaining Contractual Life	Aggregate Intrinsic Value (a)
Options Outstanding at December 31, 2016	307	$	20.72
Granted, Exercised and Canceled	—	$	—
Options Outstanding at December 30, 2017	307	$	20.72	3.5 years	$	24,493
Vested and Exercisable at December 30, 2017	307	$	20.72	3.5 years	$	24,493


(a)	The closing price per share on the last trading day prior to year-end 2017 was $100.40.

There were no stock option exercises in 2017. A summary of the Company's stock option exercises in 2016 and 2015 is as follows:



(In thousands)	December 31, 2016		January 2, 2016
Total Intrinsic Value of Options Exercised	$	1,341	$	442
Cash Received from Options Exercised	$	1,189	$	284

Modified Awards

On September 20, 2017, the Company entered into an executive transition agreement with its vice president, general counsel and secretary in connection with her retirement on July 1, 2018. This agreement included provisions for post-employment compensation and modifications to outstanding equity awards. The Company will recognize $374,000 of post-employment compensation ratably through the retirement date. Pursuant to this agreement, all unvested RSUs vest at the retirement date. As of September 20, 2017, 4,254 RSUs were remeasured at a fair value of $93.82 per unit. The remaining compensation expense associated with the modified RSUs totaled $332,000 as of September 20, 2017, which will be recognized ratably through the retirement date.

Employee Stock Purchase Plan

The Company's eligible U.S. employees may elect to participate in its employee stock purchase plan. Under the plan, shares of the Company's common stock may be purchased at a 15% discount from the fair market value at the beginning or end of the purchase period, whichever is lower. Shares purchased under the plan are subject to a one-year resale restriction and are purchased through payroll deductions of up to 10% of each participating employee's gross wages. The Company issued 13,156 shares for 2017 (issued in 2018), 17,874 shares in 2016, and 13,573 shares in 2015 of its common stock under this plan.

401(k) Savings and Other Defined Contribution Plans

The Company's U.S. subsidiaries participate in the Kadant Inc. 401(k) Retirement Savings Plan sponsored by the Company. Contributions to the plan are made by both the employee and the Company and are immediately vested. Company contributions are based upon the level of employee contributions.

Certain of the Company's subsidiaries offer other retirement plans, the majority of which are defined contribution plans. Company contributions to these plans are based on formulas determined by the Company.

For these plans, the Company contributed and charged to expense approximately $3,327,000 in 2017, $3,005,000 in 2016, and $2,749,000 in 2015.

Pension and Other Post-Retirement Benefits Plans

The Company sponsors a noncontributory defined benefit pension plan, which is closed to new participants, for eligible employees at one of its U.S. divisions and its corporate office. Certain of the Company’s non-U.S. subsidiaries also sponsor defined benefit pension plans covering certain employees at those subsidiaries. Funds for the U.S. pension plan and one of the non-U.S. pension plans are contributed to a trustee as necessary to provide for current service and for any unfunded projected benefit obligation over a reasonable period. The remaining non-U.S. pension plans are unfunded as permitted under their plans and applicable laws. Benefits under the Company’s pension plans are based on years of service and employee compensation.

The Company also provides other post-retirement benefits under plans in the United States and at one of its non-U.S. subsidiaries. In addition, the Company provides for a restoration plan for certain executive officers which fully supplements benefits lost under the noncontributory defined benefit retirement plan as a consequence of applicable Internal Revenue Service limits and restores benefits for the limitation of years of service under the retirement plan.

In accordance with ASC 715, "Compensation-Retirement Benefits," (ASC 715), the Company recognizes the funded status of its defined benefit pension and other post-retirement benefit plans as an asset or liability and changes in the funded status through AOCI, net of tax. The amounts in AOCI will be subsequently recognized as net periodic pension cost pursuant to the Company's historical accounting policy for amortizing such amounts. Further, actuarial gains and losses that arise in subsequent periods and are not recognized as net periodic pension cost in the same periods will be recognized as a component of AOCI, net of tax. The actuarial loss and prior service loss included in AOCI and expected to be recognized in net periodic benefit cost in 2018 are $665,000 and $93,000, respectively.

The following table summarizes the change in benefit obligation; the change in plan assets; the unfunded status; and the amounts recognized in the accompanying consolidated balance sheet for the Company's U.S. and non-U.S. pension benefit plans and other post-retirement benefit plans. In accordance with ASU No. 2015-04, Compensation - Retirement Benefits (Topic 715), the Company elects to measure its plan assets and benefit obligations as of December 31.



	U.S. Pension						Non-U.S. Pension						Other Post-Retirement
(In thousands)	December 30, 2017			December 31, 2016			December 30, 2017			December 31, 2016			December 30, 2017			December 31, 2016
Change in Projected Benefit Obligation:
Projected benefit obligation at beginning of year	$	31,935		$	31,310		$	3,341		$	3,041		$	3,894		$	3,539
Acquisitions	—			—			241			380			—			—
Service cost	685			723			148			102			175			130
Interest cost	1,231			1,273			114			107			170			156
Actuarial loss	2,626			575			270			58			635			686
Benefits paid	(1,720		)	(1,946		)	(265		)	(63		)	(175		)	(180		)
Settlement payment	—			—			—			—			—			(415		)
Currency translation	—			—			421			(284		)	5			(22		)
Projected benefit obligation at end of year	$	34,757		$	31,935		$	4,270		$	3,341		$	4,704		$	3,894
Change in Plan Assets:
Fair value of plan assets at beginning of year	$	28,985		$	27,776		$	426		$	396		$	28		$	26
Actual return on plan assets	3,409			2,075			23			6			1			1
Employer contributions	1,080			1,080			355			159			179			601
Benefits paid	(1,720		)	(1,946		)	(265		)	(63		)	(175		)	(180		)
Settlement payment	—			—			—			—			—			(415		)
Currency translation	—			—			18			(72		)	2			(5		)
Fair value of plan assets at end of year	$	31,754		$	28,985		$	557		$	426		$	35		$	28
Unfunded Status	$	(3,003	)	$	(2,950	)	$	(3,713	)	$	(2,915	)	$	(4,669	)	$	(3,866	)
Accumulated Benefit Obligation at End of Year	$	30,311		$	27,573		$	3,047		$	2,549		$	—		$	—

Amounts Included in the Balance Sheet:
Current liability	$	—		$	—		$	(205	)	$	(194	)	$	(173	)	$	(183	)
Non-current liability	$	(3,003	)	$	(2,950	)	$	(3,508	)	$	(2,721	)	$	(4,496	)	$	(3,683	)

Amounts Included in Accumulated Other Comprehensive Items Before Tax:
Unrecognized net actuarial loss	$	(7,485	)	$	(7,383	)	$	(1,085	)	$	(784	)	$	(1,424	)	$	(872	)
Unrecognized prior service cost	—			(53		)	(52		)	(42		)	(439		)	(525		)
	$	(7,485	)	$	(7,436	)	$	(1,137	)	$	(826	)	$	(1,863	)	$	(1,397	)

Changes in Amounts Included in Accumulated Other Comprehensive Items Before Tax:
Current year net actuarial (loss) gain	$	(544	)	$	213		$	(277	)	$	(75	)	$	(634	)	$	(685	)
Amortization of prior service cost	53			55			6			4			88			88
Amortization of net actuarial loss	442			498			38			39			83			50
Settlement loss	—			—			—			—			—			114
Currency translation	—			—			(78		)	85			(3		)	(29		)
	$	(49	)	$	766		$	(311	)	$	53		$	(466	)	$	(462	)

The weighted-average assumptions used to determine the benefit obligation are as follows:



	U.S. Pension				Non-U.S. Pension				Other Post-Retirement
	U.S. Pension				Non-U.S. Pension				Other Post-Retirement
	December 30, 2017		December 31, 2016		December 30, 2017		December 31, 2016		December 30, 2017		December 31, 2016
Discount rate	3.51	%	4.03	%	3.16	%	3.26	%	3.71	%	4.20	%
Rate of compensation increase	3.00	%	3.00	%	3.33	%	3.33	%	3.11	%	3.12	%

The discount rates for pension and other post-retirement plans are based on market yields on high-quality corporate bonds currently available and expected to be available during the period to maturity of the benefits. For pension and post-retirement plans that have been closed to new participants thereby shortening the duration, the discount rate is determined based on discounting the projected benefit streams against the Citigroup Pension discount curve.

The projected benefit obligations and fair values of plan assets for the Company's pension plans with projected benefit obligations in excess of plan assets are as follows:



	U.S. Pension				Non-U.S. Pension
	U.S. Pension				Non-U.S. Pension
(In thousands)	December 30, 2017		December 31, 2016		December 30, 2017		December 31, 2016
Pension Plans with Projected Benefit Obligations in Excess of Plan Assets:
Projected benefit obligation	$	34,757	$	31,935	$	4,270	$	3,341
Fair value of plan assets	$	31,754	$	28,985	$	557	$	426

The accumulated benefit obligations and fair values of plan assets for the Company's pension plans with accumulated benefit obligations in excess of plan assets are as follows:



	U.S. Pension				Non-U.S. Pension
	U.S. Pension				Non-U.S. Pension
(In thousands)	December 30, 2017		December 31, 2016		December 30, 2017		December 31, 2016
Pension Plans with Accumulated Benefit Obligations in Excess of Plan Assets:
Accumulated benefit obligation	$	—	$	—	$	3,047	$	2,549
Fair value of plan assets	$	—	$	—	$	557	$	426

The components of net periodic benefit cost are as follows:



	U.S. Pension									Non-U.S. Pension									Other Post-Retirement
	U.S. Pension									Non-U.S. Pension									Other Post-Retirement
(In thousands)	December 30, 2017			December 31, 2016			January 2, 2016			December 30, 2017			December 31, 2016			January 2, 2016			December 30, 2017			December 31, 2016			January 2, 2016
Service cost	$	685		$	723		$	842		$	148		$	102		$	105		$	175		$	130		$	117
Interest cost	1,231			1,273			1,229			114			107			102			170			156			147
Expected return on plan assets	(1,326		)	(1,288		)	(1,421		)	(25		)	(25		)	(40		)	(2		)	(2		)	(2		)
Amortization of net actuarial loss	442			498			508			38			39			38			83			50			30
Amortization of prior service cost	53			55			55			6			4			4			88			88			88
Settlement loss	—			—			—			—			—			—			—			114			—
	$	1,085		$	1,261		$	1,213		$	281		$	227		$	209		$	514		$	536		$	380

The weighted-average assumptions used to determine net periodic benefit cost are as follows:



	U.S. Pension						Non-U.S. Pension						Other Post-Retirement
	U.S. Pension						Non-U.S. Pension						Other Post-Retirement
	December 30, 2017		December 31, 2016		January 2, 2016		December 30, 2017		December 31, 2016		January 2, 2016		December 30, 2017		December 31, 2016		January 2, 2016
Discount Rate	4.03	%	4.22	%	3.87	%	3.45	%	3.87	%	3.33	%	4.10	%	4.28	%	4.01	%
Expected Long-Term Return on Plan Assets	5.00	%	5.00	%	5.25	%	7.53	%	7.72	%	6.90	%	7.53	%	7.72	%	6.90	%
Rate of Compensation Increase	3.00	%	3.00	%	3.00	%	3.65	%	3.67	%	3.42	%	3.08	%	3.05	%	3.15	%

In developing the overall expected long-term return on plan assets assumption, a building block approach was used in which rates of return in excess of inflation were considered separately for equity securities, debt securities, and other assets. The excess returns were weighted by the representative target allocation and added along with an appropriate rate of inflation to develop the overall expected long-term return on plan assets assumption. The Company believes this determination is consistent with ASC 715.

Plan Assets

The fair values of the Company's noncontributory defined benefit retirement plan assets at year-end 2017 and year-end 2016 by asset category are as follows:



	December 30, 2017 Fair Value Measurement
(In thousands)	Quoted Prices in Active Markets (Level 1)		Significant Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Total
U.S. Pension Plan Assets:
Mutual Funds	$	22,323	$	—	$	—	$	22,323
Investments measured at NAV							9,431
Total assets at fair value							$	31,754

Non-U.S. Pension Plan Assets:
Mutual Funds	$	557	$	—	$	—	$	557
Total assets at fair value							$	557



	December 31, 2016 Fair Value Measurement
(In thousands)	Quoted Prices in Active Markets (Level 1)		Significant Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Total
U.S. Pension Plan Assets:
Mutual Funds	$	20,318	$	—	$	—	$	20,318
Investments measured at NAV							8,667
Total assets at fair value							$	28,985

Non-U.S. Pension Plan Assets:
Mutual Funds	$	426	$	—	$	—	$	426
Total assets at fair value							$	426

Description of Fair Value Measurements

Level 1 – Quoted, active market prices for identical assets.

Level 2 – Observable inputs other than Level 1 prices, based on model-derived valuations in which all significant inputs are observable in active markets.

Level 3 – Unobservable inputs based on the Company's own assumptions.

The following is a description of the valuation methodologies used for assets measured at fair value. There were no changes in valuation techniques during 2017 or 2016.

Mutual funds - Investments in common stock index and fixed income funds. Share prices of the funds, referred to as a fund's Net Asset Value (NAV), are calculated daily based on the closing market prices and accruals of securities in the fund's total portfolio (total value of the fund) divided by the number of fund shares currently issued and outstanding. There are no redemption restrictions.

Investments measured at NAV - Investments in common collective trusts that invest in a diversified blend of investment and non-investment grade fixed income securities and are valued at NAV provided by the fund administrator. The NAV is used as the practical expedient to estimate fair value. The NAVs of the funds are calculated monthly based on the closing market prices and accruals of securities in the fund's total portfolio (total value of the fund) divided by the number of fund shares currently issued and outstanding. Redemptions of the investments occur by contract at the respective fund's redemption date NAV.

The Company has developed an investment policy for its U.S. noncontributory defined benefit retirement plan. The investment strategy is to emphasize total return, that is, the aggregate return from capital appreciation and dividend and interest income. The primary objective of the investment management for the plan's assets is the emphasis on consistent growth; specifically, growth in a manner that protects the plan's assets from excessive volatility in market value from year to year. The investment policy takes into consideration the benefit obligations, including timing of distributions.

The following target asset allocation has been established for the plan:



Asset Category	Minimum		Neutral		Maximum
Equity Securities	5	%	15	%	20	%
Debt Securities	80	%	85	%	95	%
Total			100	%

All equity securities must be drawn from recognized securities exchanges. Debt securities must be weighted to reflect a portfolio average maturity of not more than ten years, with average benchmark duration of five years. The credit quality must equal or exceed high investment grade quality ("Baa" or better).

Cash Flows

Contributions

The Company does not plan to make any material cash contributions to its pension and post-retirement benefit plans in 2018 other than to fund current benefit payments.

Estimated Future Benefit Payments

Expected benefit payments are based on the same assumptions used to measure the Company's benefit obligation at year-end 2017. Estimated future benefit payments during the next five years and in aggregate for the five years thereafter are as follows:



					Other Post-retirement
(In thousands)	U.S. Pension		Non-U.S. Pension		Other Post-retirement
2018	$	1,500	$	282	$	179
2019	1,507		159		166
2020	4,402		139		332
2021	1,960		284		151
2022	1,606		370		155
2023-2027	12,606		2,337		3,707

Stockholders' Equity	12 Months Ended
Stockholders' Equity	Dec. 30, 2017
Stockholders' Equity Note [Abstract]
Stockholder's Equity	Stockholders' Equity Preferred Stock The Company's Certificate of Incorporation authorizes up to 5,000,000 shares of preferred stock, $.01 par value per share, for issuance by the Company's board of directors without further shareholder approval. Common Stock At year-end 2017, the Company reserved 1,044,954 unissued shares of its common stock for possible issuance under its stock-based compensation plans.

Income Taxes

12 Months Ended

Dec. 30, 2017

Income Tax Disclosure [Abstract]

Income Taxes

The Tax Cuts and Jobs Act of 2017 (2017 Tax Act) was signed into law on December 22, 2017 and is generally effective for tax years beginning January 1, 2018. The most significant impacts of the 2017 Tax Act to the Company include a decrease in the federal corporate income tax rate from 35% to 21%, and a one-time mandatory transition tax on deemed repatriation of previously tax-deferred and unremitted foreign earnings. For 2017, the Company recorded a provisional net income tax expense of $7,487,000, including the impact of state taxes, which consists of a provisional amount for our one-time mandatory transition tax of $10,303,000, partially offset by a provisional net tax benefit of

$2,816,000 for the re-measurement of our deferred income tax assets and liabilities due to the decrease in the federal corporate income tax rate. The Company anticipates offsetting the one-time mandatory transition tax against existing tax attributes, which will reduce the required federal payment to approximately $4,599,000 over the elected eight-year payment period.

On December 22, 2017, the SEC staff issued Staff Accounting Bulletin No. 118 (SAB 118) related to the income tax accounting implications of the 2017 Tax Act, which provides guidance on accounting for the 2017 Tax Act’s impact. SAB 118 provides a measurement period, which in no case should extend beyond one year from the 2017 Tax Act enactment date, during which a company acting in good faith may complete the accounting for the impacts of the 2017 Tax Act under ASC Topic 740. In accordance with SAB 118, a company must reflect the income tax effects of the 2017 Tax Act in the reporting period in which the accounting under ASC Topic 740 is complete. To the extent that a company’s accounting for certain income tax effects of the 2017 Tax Act is incomplete, a company can determine a reasonable estimate for those effects and record a provisional estimate in the financial statements in the first reporting period in which a reasonable estimate can be determined. In accordance with SAB 118, the Company has recognized the provisional tax impacts, outlined above, related to the re-measurement of our deferred income tax assets and liabilities and the one-time mandatory transition tax on deemed repatriation of unremitted foreign earnings. The ultimate impact may differ from the provisional amounts, due to, among other things, the significant complexity of the 2017 Tax Act and anticipated additional regulatory guidance that may be issued by the Internal Revenue Service, changes in analysis, interpretations and assumptions the Company has made and actions the Company may take as a result of the 2017 Tax Act.

While the 2017 Tax Act provides for a territorial tax system, beginning in 2018, it includes two new U.S. tax base erosion provisions, Global Intangible Low-Taxed Income (GILTI) and Base Erosion Anti-Abuse Tax (BEAT). The Company has elected to account for any potential GILTI tax in the period in which it is incurred, and therefore has not provided any deferred income tax impacts of GILTI in its consolidated financial statements for 2017. In addition, the Company does not expect to be subject to the minimum tax pursuant to the BEAT provisions.

The components of income from continuing operations before provision for income taxes are as follows:



(In thousands)	December 30, 2017		December 31, 2016		January 2, 2016
Domestic	$	2,797	$	6,196	$	13,076
Foreign	54,856		38,353		36,295
	$	57,653	$	44,549	$	49,371

The components of the provision for income taxes from continuing operations are as follows:



(In thousands)	December 30, 2017			December 31, 2016			January 2, 2016
Current Provision:
Federal	$	7,835		$	535		$	4,693
Foreign	17,372			11,323			10,623
State	285			838			1,152
	25,492			12,696			16,468
Deferred Provision (Benefit):
Federal	4,682			1,738			45
Foreign	(3,563		)	(1,818		)	(1,378		)
State	(541		)	(533		)	(373		)
	578			(613		)	(1,706		)
	$	26,070		$	12,083		$	14,762

The provision for income taxes included in the accompanying consolidated statement of income is as follows:



(In thousands)	December 30, 2017		December 31, 2016		January 2, 2016
Continuing Operations	$	26,070	$	12,083	$	14,762
Discontinued Operation	—		2		43
	$	26,070	$	12,085	$	14,805

The Company receives a tax deduction upon the exercise of nonqualified stock options and the vesting of RSUs. The current provision for income taxes in the accompanying consolidated statement of income does not reflect $881,000 in 2015 of such excess tax benefits, from the exercise of stock options and vesting of RSUs. In 2016, the Company adopted ASU No. 2016-09, Compensation – Stock Compensation (Topic 718), Improvements to Employee Share-Based Payment Accounting. This ASU requires that excess income tax benefits and tax deficiencies related to stock-based compensation arrangements be recognized as discrete items within the provision for income taxes instead of capital in excess of par value in the reporting period in which they occur. The Company recognized an income tax benefit of $608,000 in 2017 and $582,000 in 2016 in the Company's accompanying consolidated statement of income.

The provision for income taxes from continuing operations in the accompanying statement of income differs from the provision calculated by applying the statutory federal income tax rate of 35% to income from continuing operations before provision for income taxes due to the following:



(In thousands)	December 30, 2017			December 31, 2016			January 2, 2016
Provision for Income Taxes at Statutory Rate	$	20,179		$	15,592		$	17,279
Increases (Decreases) Resulting From:
State income taxes, net of federal tax	151			189			506
U.S. tax cost of foreign earnings	761			192			455
Foreign tax rate differential	(3,747		)	(3,921		)	(3,852		)
Provision for (reversal of) tax benefit reserves, net	1,517			(76		)	33
Change in valuation allowance	(341		)	(131		)	99
Nondeductible expenses	1,177			1,090			704
Research and development tax credits	(297		)	(229		)	(210		)
Excess tax benefit related to share-based compensation	(581		)	(553		)	—
Impact of the U.S. Tax Cuts and Jobs Act	7,093			—			—
Other	158			(70		)	(252		)
	$	26,070		$	12,083		$	14,762

Net deferred tax liability in the accompanying consolidated balance sheet consists of the following:



(In thousands)	December 30, 2017			December 31, 2016
Deferred Tax Asset:
Foreign, state, and alternative minimum tax credit carryforwards	$	185		$	161
Reserves and accruals	4,455			4,842
Net operating loss carryforwards	15,161			13,694
Inventory basis difference	3,265			3,005
Research and development	88			75
Employee compensation	2,610			4,966
Allowance for doubtful accounts	505			488
Revenue recognition	—			636
Other	59			249
Deferred tax asset, gross	26,328			28,116
Less: valuation allowance	(10,835		)	(10,863		)
Deferred tax asset, net	15,493			17,253
Deferred Tax Liability:
Goodwill and intangible assets	(32,120		)	(21,853		)
Fixed asset basis difference	(4,213		)	(4,325		)
Provision for unremitted foreign earnings	(2,718		)	—
Other	(554		)	(1,199		)
Deferred tax liability	(39,605		)	(27,377		)
Net deferred tax liability	$	(24,112	)	$	(10,124	)

The Company has established valuation allowances related to certain domestic and foreign deferred tax assets on deductible temporary differences, tax losses, and tax credit carryforwards. The valuation allowance at year-end 2017 was $10,835,000, consisting of $506,000 in the United States and $10,329,000 in foreign jurisdictions. The decrease in the valuation allowance in 2017 of $28,000 related primarily to fluctuations in foreign currency exchange rates, tax rate changes, and expected future utilization of net operating losses in certain state and foreign jurisdictions. Compliance with ASC 740 requires the Company to periodically evaluate the necessity of establishing or adjusting a valuation allowance for deferred tax assets depending on whether it is more likely than not that a related tax benefit will be realized in future periods. When assessing the need for a valuation allowance in a tax jurisdiction, the Company evaluates the weight of all available evidence to determine whether it is more likely than not that some portion or all of the deferred tax assets will not be realized. As part of this evaluation, the Company considers its cumulative three-year history of earnings before income taxes, taxable income in prior carryback years, future reversals of existing taxable temporary differences, prudent and feasible tax planning strategies, and expected future results of operations. As of year-end 2017, the Company continued to maintain a valuation allowance in the United States against a portion of its state net operating loss carryforwards due to the uncertainty of future profitability in state jurisdictions. As of year-end 2017, the Company maintained valuation allowances in certain foreign jurisdictions because of the uncertainty of future profitability.

At year-end 2017, the Company had domestic state net operating loss carryforwards of $32,879,000 and foreign net operating loss carryforwards of $52,813,000. The domestic state net operating loss carryforwards will expire in the years 2018 through 2037. Their utilization is limited to future taxable income from the Company's domestic subsidiaries. The foreign net operating loss carryforwards do not expire.

At year-end 2017, the Company had approximately $245,640,000 of unremitted foreign earnings. The Company intends to repatriate the distributable reserves of select foreign subsidiaries back to the United States and has recognized $2,718,000 of tax expense on the estimated repatriation amount in the fourth quarter of 2017. Except for these select foreign subsidiaries, the Company intends to reinvest indefinitely the earnings of its international subsidiaries in order to support the current and future capital needs of their operations in the foreign jurisdictions, including the repayment of the Company’s foreign debt. The related foreign tax withholding, which would be required if the Company were to remit these foreign earnings to the United States, would be approximately $3,740,000.

The Company operates within multiple tax jurisdictions and could be subject to audit in those jurisdictions. Such audits can involve complex income tax issues, which may require an extended period of time to resolve and may cover multiple years. In management's opinion, adequate provisions for income taxes have been made for all years subject to audit.

As of year-end 2017, the Company had $7,843,000 of unrecognized tax benefits which, if recognized, would reduce the effective tax rate. A reconciliation of the beginning and ending amount of unrecognized tax benefits at year-end 2017 and year-end 2016 is as follows:



(In thousands)	December 30, 2017			December 31, 2016
Unrecognized Tax Benefits, Beginning of Year	$	5,467		$	5,052
Gross Increases—Tax Positions in Prior Periods	4			403
Gross Decreases—Tax Positions in Prior Periods	(22		)	(23		)
Gross Increases—Current-period Tax Positions	2,229			480
Lapses of Statutes of Limitations	(11		)	(359		)
Currency Translation	176			(86		)
Unrecognized Tax Benefits, End of Year	$	7,843		$	5,467

The Company recognizes accrued interest and penalties related to unrecognized tax benefits in the provision for income taxes. The Company has accrued $1,523,000 at year-end 2017 and $1,321,000 at year-end 2016 for the potential payment of interest and penalties. The interest and penalties included in the accompanying consolidated statement of income was an expense of $199,000 in 2017 and $69,000 in 2016.

The Company is currently under audit in certain non-U.S. taxing jurisdictions. It is reasonably possible that over the next fiscal year the amount of liability for unrecognized tax benefits may be reduced by up to $1,585,000 primarily from the expiration of tax statutes of limitations.

The Company remains subject to U.S. Federal income tax examinations for the tax years 2008 through 2017, and to non-U.S. income tax examinations for the tax years 2004 through 2017. In addition, the Company remains subject to state and local income tax examinations in the United States for the tax years 2001 through 2017.

Long-Term Obligations

12 Months Ended

Dec. 30, 2017

Debt Disclosure [Abstract]

Long-Term Obligations

Long-term obligations at year-end 2017 and year-end 2016 are as follows:



(In thousands)	December 30, 2017			December 31, 2016
Revolving Credit Facility, due 2022	$	237,011		$	61,494
Obligations Under Capital Lease, due 2018 to 2022	4,633			4,309
Other Borrowings, due 2018 to 2023	436			608
Total	242,080			66,411
Less: Current Maturities of Long-Term Obligations	(696		)	(643		)
Long-Term Obligations	$	241,384		$	65,768

See Note 10 for the fair value information related to the Company's long-term obligations.

Revolving Credit Facility

On March 1, 2017, the Company entered into an Amended and Restated Credit Agreement (as amended, the 2017 Credit Agreement) that became effective on March 2, 2017, which is a five-year unsecured multi-currency revolving credit facility in the aggregate principal amount of up to $200,000,000. On May 24, 2017, the Company entered into a first amendment and limited consent, which increased the revolving loan commitment to $300,000,000. The 2017 Credit Agreement also includes an uncommitted unsecured incremental borrowing facility of up to an additional $100,000,000. The principal on any borrowings made under the 2017 Credit Agreement is due on March 1, 2022. Borrowing may be denominated in U.S. dollars or certain foreign currencies, as defined in the 2017 Credit Agreement. Interest on any loans outstanding under the 2017 Credit Agreement accrues and generally is payable quarterly in arrears at one of the following rates selected by the Company: (i) the Base Rate, calculated as the highest of (a) the federal funds rate plus 0.50% (b) the prime rate as published by Citizens Bank, and (c) the thirty-day London Inter-Bank Offered Rate (LIBOR) rate, as defined, plus 0.50%; or (ii) the LIBOR rate (with a zero percent floor), as defined, plus an applicable margin of 1% to 2%. The applicable margin is determined based upon the ratio of the Company's total debt, net of certain cash, as defined, to earnings before interest, taxes, depreciation, and amortization (EBITDA), as defined in the 2017 Credit Agreement. For this purpose, total debt net of certain cash is defined as total debt less the sum of (i) unrestricted U.S. cash, and (ii) 65% of unrestricted cash outside of the United States, but no more than an aggregate amount of $30,000,000.

The obligations of the Company under the 2017 Credit Agreement may be accelerated upon the occurrence of an event of default under the 2017 Credit Agreement, which includes customary events of default including, without limitation, payment defaults, defaults in the performance of affirmative and negative covenants, the inaccuracy of representations or warranties, bankruptcy- and insolvency-related defaults, defaults relating to such matters as the Employment Retirement Income Security Act (ERISA), unsatisfied judgments, the failure to pay certain indebtedness, and a change of control default. In addition, the 2017 Credit Agreement contains negative covenants applicable to the Company and its subsidiaries, including financial covenants requiring the Company to comply with a maximum consolidated leverage ratio of 3.5 to 1, a minimum consolidated interest coverage ratio of 3 to 1, and restrictions on liens, indebtedness, fundamental changes, dispositions of property, making certain restricted payments (including dividends and stock repurchases), investments, transactions with affiliates, sale and leaseback transactions, swap agreements, changing its fiscal year, arrangements affecting subsidiary distributions, entering into new lines of business, and certain actions related to a discontinued operation. At year-end 2017, the Company was in compliance with these covenants.

Loans under the 2017 Credit Agreement are guaranteed by certain domestic subsidiaries of the Company pursuant to an Amended and Restated Guarantee Agreement, dated as of March 1, 2017. In addition, one of the Company's foreign subsidiaries entered into a Guarantee Agreement limited to certain obligations of two foreign subsidiary borrowers pursuant to a Guarantee Agreement dated as of March 1, 2017.

During 2017, the Company borrowed an aggregate $232,019,000 under the 2017 Credit Agreement, including $70,691,000 of Canadian dollar-denominated and $61,769,000 of euro-denominated borrowings. At year-end 2017, the outstanding balance under the 2017 Credit Agreement was $237,011,000, including $58,692,000 of euro-denominated and $58,319,000 of Canadian dollar-denominated borrowings and had $64,030,000 of borrowing capacity available under its 2017 Credit Agreement, as calculated by translating its foreign-denominated borrowings using borrowing date foreign exchange rates.

The weighted average interest rate for the revolving credit facility was 2.69% at year-end 2017 and 1.52% at year-end 2016.

Debt Issuance Costs

During 2017, the Company incurred an additional $1,257,000 of debt issuance costs related to the 2017 Credit Agreement. Unamortized debt issuance costs, included in other assets in the accompanying consolidated balance sheet, were $1,285,000 at year-end 2017 and $266,000 at year-end 2016 and are being amortized to interest expense using the straight-line method.

Obligations Under Capital Lease

The Company's obligations under capital leases include a sale-leaseback financing arrangement for PAAL's facility in Germany. Under this arrangement, the quarterly lease payment includes principal, interest, and a payment to the landlord toward a loan receivable. The loan receivable, which is included in other assets in the accompanying consolidated balance sheet, was $490,000 at year-end 2017. The lease arrangement provides for a fixed price purchase option, net of the projected loan receivable, of $1,594,000 at the end of the lease term in 2022. If the Company does not exercise the purchase option for the facility, the Company will receive cash from the landlord to settle the loan receivable. As of year-end 2017, $4,535,000 was outstanding under this capital lease obligation with an interest rate of 1.79% on the outstanding balance and $98,000 related to other capital lease obligations.

The following schedule presents future minimum lease payments under the Company's capital lease obligations and the present value of the minimum lease payments as of year-end 2017.



(In thousands)	Capital Lease Obligations
2018	$	604
2019	597
2020	605
2021	567
2022	915
Total Minimum Lease Payments	$	3,288
Less: Imputed Interest	(249		)
Present Value of Minimum Lease Payments	$	3,039

Commitments and Contingencies	12 Months Ended
Commitments and Contingencies	Dec. 30, 2017
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies Operating Leases The Company occupies office and operating facilities under various operating leases. The accompanying consolidated statement of income includes expenses from operating leases of $4,955,000 in 2017, $4,298,000 in 2016, and $3,797,000 in 2015. The future minimum payments due under noncancelable operating leases at year-end 2017 are $3,470,000 in 2018; $2,251,000 in 2019; $1,584,000 in 2020; $1,197,000 in 2021; $1,105,000 in 2022 and $1,994,000 thereafter. Total future minimum lease payments are $11,601,000. Letters of Credit and Bank Guarantees Outstanding letters of credit and bank guarantees issued on behalf of the Company, principally relating to performance obligations and customer deposit guarantees, totaled $21,021,000 at year-end 2017. Certain of the Company's contracts, particularly for stock-preparation and systems orders, require the Company to provide a standby letter of credit or bank guarantee to a customer as beneficiary, limited in amount to a negotiated percentage of the total contract value, in order to guarantee warranty and performance obligations of the Company under the contract. Typically, these standby letters of credit and bank guarantees expire without being drawn by the beneficiary. Right of Recourse In the ordinary course of business, the Company's subsidiaries in China may receive banker's acceptance drafts from customers as payment for their trade accounts receivable. The banker's acceptance drafts are noninterest-bearing obligations of the issuing bank and mature within six months of the origination date. The Company's subsidiaries in China may use these banker's acceptance drafts prior to the scheduled maturity date to settle outstanding accounts payable with vendors. Banker's acceptance drafts transferred to vendors are subject to customary right of recourse provisions prior to their scheduled maturity dates. The Company had $10,035,000 at year-end 2017 and $4,824,000 at year-end 2016 of banker's acceptance drafts subject to recourse, which were transferred to vendors and had not reached their scheduled maturity dates. Historically, the banker's acceptance drafts have settled upon maturity without any claim of recourse against the Company. Contingencies In the ordinary course of business, the Company is, at times, required to issue limited performance guarantees, some of which do not require the issuance of letters of credit to customers in support of these guarantees, relating to its equipment and systems. The Company generally limits its liability under these guarantees to amounts typically capped at 10% or less of the value of the contract. The Company believes that it has adequate reserves for any potential liability in connection with such guarantees. Litigation From time to time, the Company is subject to various claims and legal proceedings covering a range of matters that arise in the ordinary course of business. Such litigation may include, but is not limited to, claims and counterclaims by and against the Company for breach of contract or warranty, canceled contracts, product liability, or bankruptcy-related claims. For legal proceedings in which a loss is probable and estimable, the Company accrues a loss based on the low end of the range of estimated loss when there is no better estimate within the range. If the Company were found to be liable for any of the claims or counterclaims against it, the Company would incur a charge against earnings for amounts in excess of legal accruals.

Restructuring Costs and Other Income

12 Months Ended

Dec. 30, 2017

Restructuring and Related Activities [Abstract]

Restructuring Costs and Other Income

Restructuring Costs

In 2017, the Company recorded restructuring costs of $203,000 associated with severance costs for the reduction of four employees in the United States and six employees in Sweden in the Papermaking Systems segment. In 2017, the Company constructed a 160,000 square foot manufacturing facility in the United States and will integrate its U.S. and Swedish stock-preparation product lines into a single manufacturing facility to achieve economies of scale and greater efficiencies. The Company has identified other restructuring actions related to this plan, such as the relocation of machinery and equipment, severance and abandonment of leased facilities, which will result in additional charges of approximately $1,708,000 that will be recorded in 2018 when specified criteria are met.

In 2015, the Company recorded restructuring costs of $515,000, including $344,000 related to its 2015 restructuring plans, and an additional charge of $171,000 related to its 2014 restructuring plans. The 2015 charges related to severance costs associated with the reduction of 25 employees in Canada and Brazil. The 2014 charges related to severance costs associated with the reduction of four employees in Sweden. These actions were taken to further streamline operations related to previous restructuring actions in its Papermaking Systems Segment.

A summary of the changes in accrued restructuring costs included in other accrued expenses in the accompanying consolidated balance sheet are as follows:



(In thousands)	Severance Costs
2017 Restructuring Plan
Provision	$	203
Balance at December 30, 2017	$	203
2015 Restructuring Plans
Provision	$	344
Usage	(323		)
Currency translation	(21		)
Balance at January 2, 2016	$	—
2014 Restructuring Plans
Balance at January 3, 2015	$	47
Provision	171
Usage	(214		)
Currency translation	(4		)
Balance at January 2, 2016	$	—

Other Income

In 2016, other income consisted of a pre-tax gain of $317,000 from the sale of real estate in Sweden for cash proceeds of $368,000.

Derivatives

12 Months Ended

Dec. 30, 2017

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Derivatives

Interest Rate Swap Agreement

On January 16, 2015, the Company entered into a swap agreement (2015 Swap Agreement) to hedge its exposure to movements in the three-month LIBOR rate on future outstanding debt and has designated the 2015 Swap Agreement as a cash flow hedge. The 2015 Swap Agreement expires on March 27, 2020 and has a $10,000,000 notional value. Under the 2015 Swap Agreement, on a quarterly basis, the Company receives a three-month LIBOR rate and pays a fixed rate of interest of 1.50% plus an applicable margin. The fair value of the 2015 Swap Agreement at year-end 2017 is included in other assets, with an offset to AOCI, net of tax, in the accompanying consolidated balance sheet.

The Company has structured the 2015 Swap Agreement to be 100% effective and as a result there is no current impact to earnings resulting from hedge ineffectiveness. Management believes that any credit risk associated with the 2015 Swap Agreement is remote based on the Company's financial position and the creditworthiness of the financial institution that issued the 2015 Swap Agreement.

The counterparty to the 2015 Swap Agreement could demand an early termination of the 2015 Swap Agreement if the Company were to be in default under the 2017 Credit Agreement, or any agreement that amends or replaces the 2017 Credit Agreement in which the counterparty is a member, and if the Company were to be unable to cure the default. An event of default under the 2017 Credit Agreement includes customary events of default and failure to comply with financial covenants, including a maximum consolidated leverage ratio of 3.5 to 1, a minimum consolidated interest coverage ratio of 3 to 1, and restrictions on liens, indebtedness, fundamental changes, dispositions of property, making certain restricted payments (including dividends and stock repurchases), investments, transactions with affiliates, sale and leaseback transactions, swap agreements, changing its fiscal year, arrangements affecting subsidiary distributions, entering into new lines of business, and certain actions related to a discontinued operation. At year-end 2017, the Company was in compliance with these covenants. The unrealized gain associated with the 2015 Swap Agreement was $126,000 at year-end 2017, which represents the estimated amount that the Company would receive from the counterparty in the event of an early termination.

Forward Currency-Exchange Contracts

The Company uses forward currency-exchange contracts primarily to hedge exposures resulting from fluctuations in currency exchange rates. Such exposures result primarily from portions of the Company's operations and assets and liabilities that are denominated in currencies other than the functional currencies of the businesses conducting the operations or holding the assets and liabilities. The Company typically manages its level of exposure to the risk of currency-exchange fluctuations by hedging a portion of its anticipated currency exposures over the ensuing 12-month period, using forward currency-exchange contracts that have maturities of twelve months or less.

Forward currency-exchange contracts that hedge forecasted accounts receivable or accounts payable are designated as cash flow hedges. The fair value for these instruments is included in other current assets for unrecognized gains and in other current liabilities for unrecognized losses, with an offset in AOCI, net of tax. For forward currency-exchange contracts that are designated as fair value hedges, the gain or loss on the derivative, as well as the offsetting loss or gain on the hedged item are recognized currently in earnings. The fair value of forward currency-exchange contracts that are not designated as hedges is recorded currently in earnings with gains reported in other current assets and losses reported in other current liabilities. The Company recognized within SG&A expenses in the accompanying consolidated statement of income losses of $1,367,000 in 2017, $797,000 in 2016 and $386,000 in 2015, associated with forward currency-exchange contracts that were not designated as hedges. Management believes that any credit risk associated with forward currency-exchange contracts is remote based on the Company's financial position and the creditworthiness of the financial institutions issuing the contracts.

The following table summarizes the fair value of the Company's derivative instruments designated and not designated as hedging instruments, the notional amount of the associated derivative contracts, and the location of these instruments in the accompanying consolidated balance sheet:



		December 30, 2017					December 31, 2016
(In thousands)	Balance Sheet Location	Asset (Liability) (a)			Notional Amount (b)		Asset (Liability) (a)			Notional Amount
Derivatives Designated as Hedging Instruments:
Derivatives in an Asset Position:
Interest rate swap agreement	Other Long-Term Assets	$	126		$	10,000	$	62		$	10,000
Derivatives in a Liability Position:
Forward currency-exchange contracts	Other Current Liabilities	$	—		$	—	$	(41	)	$	2,380
Derivatives Not Designated as Hedging Instruments:
Derivatives in an Asset Position:
Forward currency-exchange contracts	Other Current Assets	$	17		$	1,244	$	2		$	227
Derivatives in a Liability Position:
Forward currency-exchange contracts	Other Current Liabilities	$	(16	)	$	2,049	$	(237	)	$	17,185


(a)	See Note 10 for the fair value measurements relating to these financial instruments.


(b)	The total notional amount is indicative of the level of the Company's derivative activity during 2017, except for the purchase of forward currency-exchange contracts entered into in the second quarter of 2017 in anticipation of consideration paid for the acquisition of NII FPG.

The following table summarizes the activity in AOCI associated with the Company's derivative instruments designated as cash flow hedges as of and for the period ended December 30, 2017:



(In thousands)	Interest Rate Swap Agreements		Forward Currency- Exchange Contracts			Total
Unrealized Gain (Loss), Net of Tax, at December 31, 2016	$	40	$	(28	)	$	12
Loss reclassified to earnings (a)	20		64			84
Gain (loss) recognized in AOCI	19		(36		)	(17		)
Unrealized Gain, Net of Tax, at December 30, 2017	$	79	$	—		$	79


(a)	See Note 13 for the income statement classification.

At year-end 2017, the Company expects to reclassify $28,000 of the net unrealized gain included in AOCI to earnings over the next twelve months.

Fair Value Measurements and Fair Value of Financial Instruments

12 Months Ended

Dec. 30, 2017

Fair Value Disclosures [Abstract]

Fair Value Measurements and Fair Value of Financial Instruments

Fair value measurement is defined as the price that would be received to sell an asset or paid to transfer a liability in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants at the measurement date. A fair value hierarchy is established, which prioritizes the inputs used in measuring fair value into three broad levels as follows:


•	Level 1—Quoted prices in active markets for identical assets or liabilities.


•	Level 2—Inputs, other than quoted prices in active markets, that are observable either directly or indirectly.


•	Level 3—Unobservable inputs based on the Company's own assumptions.

The following table presents the fair value hierarchy for those assets and liabilities measured at fair value on a recurring basis:



	Fair Value as of December 30, 2017
(In thousands)	Level 1		Level 2		Level 3		Total
Assets:
Money market funds and time deposits	$	17,728	$	—	$	—	$	17,728
Forward currency-exchange contracts	$	—	$	17	$	—	$	17
Interest rate swap agreement	$	—	$	126	$	—	$	126
Banker's acceptance drafts (a)	$	—	$	15,960	$	—	$	15,960
Liabilities:
Forward currency-exchange contracts	$	—	$	16	$	—	$	16



	Fair Value as of December 31, 2016
(In thousands)	Level 1		Level 2		Level 3		Total
Assets:
Money market funds and time deposits	$	10,855	$	—	$	—	$	10,855
Forward currency-exchange contracts	$	—	$	2	$	—	$	2
Interest rate swap agreement	$	—	$	62	$	—	$	62
Banker's acceptance drafts (a)	$	—	$	7,852	$	—	$	7,852
Liabilities:
Forward currency-exchange contracts	$	—	$	278	$	—	$	278


(a)	Included in accounts receivable in the accompanying consolidated balance sheet.

The Company uses the market approach technique to value its financial assets and liabilities, and there were no changes in valuation techniques during 2017. The Company's financial assets and liabilities carried at fair value are cash equivalents, banker's acceptance drafts, variable rate debt, capital lease obligations and derivative instruments used to hedge the Company's foreign currency and interest rate risks. The Company's cash equivalents are comprised of money market funds and bank deposits which are highly liquid and readily tradable. These cash equivalents are valued using inputs observable in active markets for identical securities. The carrying value of banker's acceptance drafts approximates their fair value due to the short-term nature of the negotiable instrument. The fair value of the Company's interest rate swap agreement is based on LIBOR yield curves at the reporting date. The fair values of the Company's forward currency-exchange contracts are based on quoted forward foreign exchange rates at the reporting date. The forward currency-exchange contracts and interest rate swap agreement are hedges of either recorded assets or liabilities or anticipated transactions. Changes in values of the underlying hedged assets and liabilities or anticipated transactions are not reflected in the table above.

The carrying value and fair value of the Company's long-term debt obligations are as follows:



	December 30, 2017				December 31, 2016
(In thousands)	Carrying Value		Fair Value		Carrying Value		Fair Value
Long-term Debt Obligations:
Revolving credit facility	$	237,011	$	237,011	$	61,494	$	61,494
Capital lease obligations	4,101		4,101		3,857		3,857
Other borrowings	272		272		417		417
	$	241,384	$	241,384	$	65,768	$	65,768

The carrying values of the Company's revolving credit facility and capital lease obligations approximate fair value as the obligations bear variable rates of interest, which adjust quarterly based on prevailing market rates.

- Definition

The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.

+ References + Details

Business Segment and Geographical Information

12 Months Ended

Dec. 30, 2017

Segment Reporting [Abstract]

Business Segment and Geographical Information

The Company has combined its operating entities into two reportable operating segments, Papermaking Systems and Wood Processing Systems, and a separate product line, Fiber-based Products. In classifying operational entities into a particular segment, the Company has aggregated businesses with similar economic characteristics, products and services, production processes, customers, and methods of distribution.

The Papermaking Systems segment develops, manufactures, and markets a range of equipment and products for the global papermaking, paper recycling, recycling and waste management, and other process industries. Principal products manufactured by this segment include: custom-engineered stock-preparation systems and equipment for the preparation of wastepaper for conversion into recycled paper and balers and related equipment used in the processing of recyclable and waste materials; fluid-handling systems and equipment used in industrial piping systems to compensate for movement and to efficiently transfer fluid, power, and data; doctoring systems and equipment and related consumables important to the efficient operation of paper machines and other industrial processes; and filtration and cleaning systems essential for draining, purifying, and recycling process water and cleaning fabrics, belts, and rolls in various process industries.

The Wood Processing Systems segment develops, manufactures, and markets stranders, debarkers, chippers, and logging machinery used in the harvesting and production of lumber and OSB. This segment also provides refurbishment and repair of pulping equipment for the pulp and paper industry.

The Fiber-based Products business manufactures and sells biodegradable, absorbent granules derived from papermaking by-products for use primarily as carriers for agricultural, home lawn and garden, and professional lawn, turf and ornamental applications, as well as for oil and grease absorption.



(In thousands)	December 30, 2017			December 31, 2016			January 2, 2016
Business Segment Information
Revenues by Product Line:
Papermaking Systems:
Stock-Preparation	$	193,838		$	171,378		$	148,341
Doctoring, Cleaning, & Filtration	109,631			105,938			101,523
Fluid-Handling	104,136			89,145			92,797
Papermaking Systems	$	407,605		$	366,461		$	342,661
Wood Processing Systems	95,053			36,850			36,387
Fiber-based Products	12,375			10,815			11,059
	$	515,033		$	414,126		$	390,107
Income from Continuing Operations Before Provision for Income Taxes:
Papermaking Systems (a)	$	72,600		$	57,427		$	56,789
Wood Processing Systems (b)	9,690			8,327			10,926
Corporate and Fiber-based Products (c)	(21,537		)	(20,181		)	(17,596		)
Total operating income	60,753			45,573			50,119
Interest expense, net (d)	(3,100		)	(1,024		)	(748		)
	$	57,653		$	44,549		$	49,371



(In thousands)	December 30, 2017		December 31, 2016		January 2, 2016
Total Assets:
Papermaking Systems	$	494,919	$	407,538	$	354,417
Wood Processing Systems	257,467		52,407		53,347
Other (e)	8,708		10,746		7,734
	$	761,094	$	470,691	$	415,498

Depreciation and Amortization:
Papermaking Systems	$	11,239	$	11,513	$	7,898
Wood Processing Systems	7,515		2,188		2,384
Other	621		625		539
	$	19,375	$	14,326	$	10,821
Capital Expenditures:
Papermaking Systems	$	14,359	$	5,504	$	4,639
Wood Processing Systems	2,333		29		198
Other	589		271		642
	$	17,281	$	5,804	$	5,479



Geographical Information
Revenues (f):
United States	$	182,788	$	165,335	$	193,383
China	63,910		43,299		50,814
Canada	47,611		28,888		21,164
Germany	32,026		18,095		9,686
Other	188,698		158,509		115,060
	$	515,033	$	414,126	$	390,107
Long-lived Assets (g):
United States	$	32,852	$	18,482	$	17,373
China	11,685		10,714		12,278
Canada	9,449		1,125		1,312
Germany	6,452		5,792		63
Other	19,285		11,591		11,267
	$	79,723	$	47,704	$	42,293


(a)	Includes $787,000 in 2017 and $3,491,000 in 2016 of acquisition-related expenses. Acquisition-related expenses include acquisition transaction costs and amortization of acquired profit in inventory and backlog. Includes restructuring costs of $203,000 in 2017, other income of $317,000 in 2016, and restructuring costs of $515,000 in 2015 (see Note 8).


(b)	Includes $11,163,000 of acquisition-related expenses in 2017.


(c)	Corporate primarily includes general and administrative expenses.


(d)	The Company does not allocate interest expense, net to its segments.


(e)	Primarily includes Corporate and Fiber-based Products' cash and cash equivalents and property, plant, and equipment.


(f)	Revenues are attributed to countries based on customer location.


(g)	Represents property, plant, and equipment, net.

Earnings per Share

12 Months Ended

Dec. 30, 2017

Earnings Per Share [Abstract]

Earnings Per Share

Earnings per Share

Basic and diluted EPS were calculated as follows:



(In thousands, except per share amounts)	December 30, 2017		December 31, 2016		January 2, 2016
Amounts Attributable to Kadant:
Income from Continuing Operations	$	31,092	$	32,074	$	34,315
Income from Discontinued Operation	—		3		74
Net Income Attributable to Kadant	$	31,092	$	32,077	$	34,389
Basic Weighted Average Shares	10,991		10,869		10,867
Effect of Stock Options, Restricted Stock Units and Employee Stock Purchase Plan	321		280		227
Diluted Weighted Average Shares	11,312		11,149		11,094
Basic EPS:
Continuing Operations	$	2.83	$	2.95	$	3.16
Discontinued Operation	$	—	$	—	$	0.01
Earnings per Basic Share	$	2.83	$	2.95	$	3.16
Diluted EPS:
Continuing Operations	$	2.75	$	2.88	$	3.09
Discontinued Operation	$	—	$	—	$	0.01
Earnings per Diluted Share	$	2.75	$	2.88	$	3.10

The dilutive effect of RSUs totaling 15,600 shares in 2017, 36,700 shares in 2016, and 23,100 shares in 2015 of common stock was not included in the computation of diluted EPS, as the effect would have been antidilutive or, for unvested performance-based RSUs, the performance conditions had not been met as of the end of the reporting periods during the year.

Accumulated Other Comprehensive Items

12 Months Ended

Dec. 30, 2017

Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]

Accumulated Other Comprehensive Items

Comprehensive income combines net income and other comprehensive items, which represent certain amounts that are reported as components of stockholders' equity in the accompanying consolidated balance sheet, including foreign currency translation adjustments, unrecognized prior service cost and deferred losses associated with pension and other post-retirement benefit plans, and deferred gains (losses) on hedging instruments.

Changes in each component of AOCI, net of tax are as follows:



(In thousands)	Foreign Currency Translation Adjustment			Unrecognized Prior Service Cost			Deferred Loss on Pension and Other Post-Retirement Benefit Plans			Deferred Gain (Loss) on Hedging Instruments			Accumulated Other Comprehensive Items
Balance at December 31, 2016	$	(41,094	)	$	(397	)	$	(8,158	)	$	12		$	(49,637	)
Other comprehensive income (loss) before reclassifications	23,593			(17		)	(1,185		)	(17		)	22,374
Reclassifications from AOCI	—			95			369			84			548
Net current period other comprehensive income (loss)	23,593			78			(816		)	67			22,922
Balance at December 30, 2017	$	(17,501	)	$	(319	)	$	(8,974	)	$	79		$	(26,715	)

Amounts reclassified out of AOCI are as follows:



(In thousands)	December 30, 2017			December 31, 2016			January 2, 2016			Income Statement Line Item
Pension and Other Post-Retirement Plans (1)
Amortization of prior service costs	$	(147	)	$	(147	)	$	(147	)	SG&A expenses
Amortization of actuarial losses	(563		)	(701		)	(576		)	SG&A expenses
Total expense before income taxes	(710		)	(848		)	(723		)
Income tax benefit	246			295			249			Provision for income taxes
	(464		)	(553		)	(474		)
Cash Flow Hedges (2)
Interest rate swap agreements	(30		)	(174		)	(420		)	Interest expense
Forward currency-exchange contracts	—			(14		)	(12		)	Revenues
Forward currency-exchange contracts	(97		)	(186		)	—			Cost of revenues
Forward currency-exchange contracts	—			—			1,691			SG&A expenses
Total (expense) income before income taxes	(127		)	(374		)	1,259
Income tax benefit (provision)	43			(37		)	(150		)	Provision for income taxes
	(84		)	(411		)	1,109
Total Reclassifications	$	(548	)	$	(964	)	$	635


(1)	Included in the computation of net periodic benefit costs. See Note 3 for additional information.


(2)	See Note 9 for additional information.

Unaudited Quarterly Information

12 Months Ended

Dec. 30, 2017

Quarterly Financial Information Disclosure [Abstract]

Unaudited Quarterly Information



2017 (In thousands, except per share amounts)	First		Second		Third		Fourth
Revenues	$	102,857	$	110,242	$	152,794	$	149,140
Gross Profit	48,992		52,824		64,628		64,590

Net Income Attributable to Kadant	$	8,951	$	8,096	$	13,285	$	760
Basic Earnings per Share:
Net Income Attributable to Kadant	$	0.82	$	0.74	$	1.21	$	0.07
Diluted Earnings per Share:
Net Income Attributable to Kadant	$	0.80	$	0.72	$	1.17	$	0.07
Cash Dividends Declared per Common Share	$	0.21	$	0.21	$	0.21	$	0.21

2016 (In thousands, except per share amounts)	First		Second		Third		Fourth
Revenues	$	96,538	$	111,828	$	105,519	$	100,241
Gross Profit	43,976		50,261		48,079		46,073
Amounts Attributable to Kadant:
Income from Continuing Operations	6,876		8,311		9,154		7,733
Income from Discontinued Operation	—		—		3		—
Net Income Attributable to Kadant	$	6,876	$	8,311	$	9,157	$	7,733
Basic Earnings per Share:
Continuing Operations	$	0.64	$	0.76	$	0.84	$	0.71
Net Income Attributable to Kadant	$	0.64	$	0.76	$	0.84	$	0.71
Diluted Earnings per Share:
Continuing Operations	$	0.62	$	0.75	$	0.82	$	0.69
Net Income Attributable to Kadant	$	0.62	$	0.75	$	0.82	$	0.69
Cash Dividends Declared per Common Share	$	0.19	$	0.19	$	0.19	$	0.19

Nature of Operations and Summary of Significant Accounting Policies (Policies)

12 Months Ended

Dec. 30, 2017

Accounting Policies [Abstract]

Principles of Consolidation

Fiscal Year

Use of Estimates and Critical Accounting Policies

Revenue Recognition and Accounts Receivable

The changes in the allowance for doubtful accounts are as follows:



(In thousands)	December 30, 2017			December 31, 2016			January 2, 2016
Balance at Beginning of Year	$	2,395		$	2,163		$	2,198
Provision charged to expense	436			453			379
Accounts written off	(159		)	(128		)	(205		)
Currency translation	207			(93		)	(209		)
Balance at End of Year	$	2,879		$	2,395		$	2,163

Warranty Obligations

Income Taxes

Earnings per Share

Cash and Cash Equivalents

Restricted Cash

Inventories

Property, Plant, and Equipment

Intangible Assets

Goodwill

Impairment of Long-Lived Assets

Foreign Currency Translation and Transactions

Stock-Based Compensation

Derivatives

Recent Accounting Pronouncements

Acquisitions

Pension and Other Post-Retirement Benefits Plans

Nature of Operations and Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 30, 2017

Accounting Policies [Abstract]

Changes in Allowance for Doubtful Accounts

The changes in the allowance for doubtful accounts are as follows:



(In thousands)	December 30, 2017			December 31, 2016			January 2, 2016
Balance at Beginning of Year	$	2,395		$	2,163		$	2,198
Provision charged to expense	436			453			379
Accounts written off	(159		)	(128		)	(205		)
Currency translation	207			(93		)	(209		)
Balance at End of Year	$	2,879		$	2,395		$	2,163

Changes in Estimated Product Warranty Liability

The changes in the carrying amount of accrued warranty costs included in other current liabilities in the accompanying consolidated balance sheet are as follows:



(In thousands)	December 30, 2017			December 31, 2016
Balance at Beginning of Year	$	3,843		$	3,670
Provision charged to expense	2,652			3,091
Usage	(2,225		)	(3,632		)
Acquisitions	790			991
Currency translation	438			(277		)
Balance at End of Year	$	5,498		$	3,843

Supplemental Cash Flow Information



(In thousands)	December 30, 2017			December 31, 2016			January 2, 2016
Cash Paid for Interest	$	2,624		$	1,183		$	616
Cash Paid for Income Taxes, Net of Refunds	$	20,559		$	15,632		$	11,497

Non-Cash Investing Activities:
Fair value of assets of acquired	$	242,048		$	84,969		$	—
Cash paid for acquired businesses	(206,950		)	(58,894		)	—
Liabilities assumed of acquired businesses	$	35,098		$	26,075		$	—

Non-cash additions to property, plant, and equipment	$	4,620		$	379		$	614

Non-Cash Financing Activities:
Issuance of Company common stock upon vesting of RSUs	$	3,192		$	3,463		$	3,423
Dividends declared but unpaid	$	2,316		$	2,078		$	1,831

Components of Inventory

The components of inventories are as follows:



(In thousands)	December 30, 2017		December 31, 2016
Raw Materials and Supplies	$	38,952	$	21,086
Work in Process	18,203		12,293
Finished Goods (includes $1,883 and $1,249 at customer locations)	27,778		21,572
	$	84,933	$	54,951

Property, Plant and Equipment

Property, plant, and equipment consist of the following:



(In thousands)	December 30, 2017		December 31, 2016
Land	$	7,894	$	4,827
Buildings	48,094		39,706
Machinery, Equipment, and Leasehold Improvements	94,779		78,953
Construction in Progress	14,464		938
	165,231		124,424
Less: Accumulated Depreciation and Amortization	85,508		76,720
	$	79,723	$	47,704

Acquired Intangible Assets

Acquired intangible assets by major asset class are as follows:



(In thousands)	Gross		Currency Translation			Accumulated Amortization			Net
December 30, 2017
Definite-Lived
Customer relationships	$	113,301	$	(621	)	$	(28,789	)	$	83,891
Product technology	46,501		(737		)	(19,841		)	25,923
Tradenames	5,227		(262		)	(1,504		)	3,461
Other	13,754		(35		)	(10,863		)	2,856
	178,783		(1,655		)	(60,997		)	116,131
Indefinite-Lived
Tradenames	16,600		305			—			16,905
Acquired Intangible Assets	$	195,383	$	(1,350	)	$	(60,997	)	$	133,036

December 31, 2016
Definite-Lived
Customer relationships	$	59,101	$	(5,202	)	$	(21,805	)	$	32,094
Product technology	27,101		(2,052		)	(17,105		)	7,944
Tradenames	4,447		(591		)	(1,065		)	2,791
Other	11,094		(228		)	(9,065		)	1,801
	101,743		(8,073		)	(49,040		)	44,630
Indefinite-Lived
Tradenames	8,100		—			—			8,100
Acquired Intangible Assets	$	109,843	$	(8,073	)	$	(49,040	)	$	52,730

Changes in the Carrying Amount of Goodwill

The changes in the carrying amount of goodwill by segment are as follows:



(In thousands)	Papermaking Systems Segment			Wood Processing Systems Segment		Total
Balance as of January 2, 2016
Gross balance	$	187,720		$	16,840	$	204,560
Accumulated impairment losses	(85,509		)	—		(85,509		)
Net balance	102,211			16,840		119,051
2016 Adjustments
Acquisition (Note 2)	38,552			—		38,552
Currency Translation	(6,573		)	425		(6,148		)
Total 2016 Adjustments	31,979			425		32,404
Balance at December 31, 2016
Gross balance	219,699			17,265		236,964
Accumulated impairment losses	(85,509		)	—		(85,509		)
Net balance	134,190			17,265		151,455
2017 Adjustments
Acquisitions (Note 2)	16,373			85,508		101,881
Currency Translation	10,942			3,723		14,665
Total 2017 Adjustments	27,315			89,231		116,546
Balance at December 30, 2017
Gross balance	247,014			106,496		353,510
Accumulated impairment losses	(85,509		)	—		(85,509		)
Net balance	$	161,505		$	106,496	$	268,001

Goodwill by Reporting Unit

Goodwill by reporting unit is as follows:



(In thousands)	December 30, 2017		December 31, 2016
Stock-Preparation	$	60,275	$	54,751
Doctoring, Cleaning, & Filtration	35,941		33,839
Fluid-Handling	65,289		45,600
Wood Processing Systems	106,496		17,265
	$	268,001	$	151,455

Acquisitions (Tables)

12 Months Ended

Dec. 30, 2017

Business Combinations [Abstract]

Purchase Price Allocation



	NII FPG		Unaflex		Other
(In thousands)	July 5, 2017		August 14, 2017		October 30, 2017		Total

Net Assets Acquired:
Cash and Cash Equivalents	$	2,219	$	—	$	—	$	2,219
Accounts Receivable	6,542		2,079		—		8,621
Inventories	25,246		1,704		—		26,950
Property, Plant, and Equipment	12,912		1,194		284		14,390
Other Assets	2,375		72		—		2,447
Definite-Lived Intangible Assets
Customer relationships	44,700		8,000		1,500		54,200
Product technology	17,100		2,300		—		19,400
Other	2,540		900		—		3,440
Indefinite-Lived Intangible Assets
Tradenames	8,500		—		—		8,500
Goodwill	85,508		15,657		716		101,881
Total assets acquired	207,642		31,906		2,500		242,048

Accounts Payable	4,970		358		—		5,328
Customer Deposits	7,396		100		—		7,496
Long-Term Deferred Income Taxes	16,668		—		—		16,668
Other Liabilities	5,597		174		—		5,771
Total liabilities assumed	34,631		632		—		35,263
Net assets acquired	$	173,011	$	31,274	$	2,500	$	206,785

Purchase Price:
Cash Paid	$	2,993	$	—	$	—	$	2,993
Cash Paid to Seller Borrowed Under the Revolving Credit Facility	170,018		31,274		2,500		203,792
Total purchase price	$	173,011	$	31,274	$	2,500	$	206,785

The following table summarizes the estimated fair values of assets acquired and liabilities assumed and the purchase price of PAAL.



	PAAL
(In thousands)	April 4, 2016

Net Assets Acquired:
Cash and Cash Equivalents	$	2,277
Accounts Receivable	5,441
Inventories	3,947
Property, Plant, and Equipment	7,179
Other Assets	2,882
Definite-Lived Intangible Assets
Customer relationships	15,831
Product technology	4,203
Tradenames	2,278
Other	2,379
Goodwill	38,552
Total assets acquired	84,969

Accounts Payable	5,536
Customer Deposits	2,471
Obligations Under Capital Lease	4,842
Long-Term Deferred Income Taxes	6,148
Other Liabilities	6,913
Total liabilities assumed	25,910
Net assets acquired	$	59,059

Purchase Price:
Cash	$	29,193
Cash Paid to Seller Borrowed Under the Revolving Credit Facility	29,866
Total purchase price	$	59,059

Unaudited Supplemental Pro Forma Information

Had the acquisitions of NII FPG and Unaflex been completed as of the beginning of 2016, the Company’s pro forma results of operations for 2017 and 2016 would have been as follows:



(In thousands, except per share amounts)	December 30, 2017		December 31, 2016
Revenues	$	565,710	$	508,832

Net Income Attributable to Kadant	$	44,159	$	30,638

Earnings per Share Attributable to Kadant:
Basic	$	4.02	$	2.82
Diluted	$	3.90	$	2.75

Had the acquisition of PAAL been completed as of the beginning of 2015, the Company’s pro forma results of operations for 2016 and 2015 would have been as follows:



(In thousands, except per share amounts)	December 31, 2016		January 2, 2016
Revenues	$	427,273	$	444,350

Net Income Attributable to Kadant	$	35,321	$	33,881

Earnings per Share Attributable to Kadant:
Basic	$	3.25	$	3.12
Diluted	$	3.17	$	3.05

Employee Benefit Plans (Tables)

12 Months Ended

Dec. 30, 2017

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Components of Pre-Tax Stock-Based Compensation Expense

The components of pre-tax stock-based compensation expense included in SG&A expenses in the accompanying consolidated statement of income are as follows:



(In thousands)	December 30, 2017		December 31, 2016		January 2, 2016
Restricted Stock Unit Awards	$	5,621	$	4,848	$	5,185
Employee Stock Purchase Plan Awards	182		170		136
Stock Option Awards	—		51		420
Total	$	5,803	$	5,069	$	5,741

Summary of Activity of the Unvested Restricted Stock Units

A summary of the activity of the Company's unvested RSUs in 2017 is as follows:



	Units (In thousands)		Weighted Average Grant- Date Fair Value
Unvested RSUs at December 31, 2016	203		$	40.23
Granted	110		$	59.30
Vested	(111	)	$	42.81
Forfeited / Expired	(3	)	$	43.75
Unvested RSUs at December 30, 2017	199		$	49.32

Stock Option Activity

A summary of the Company's stock option activity in 2017 is as follows:



(In thousands, except per share amounts)	Number of Shares	Weighted Average Exercise Price		Weighted Average Remaining Contractual Life	Aggregate Intrinsic Value (a)
Options Outstanding at December 31, 2016	307	$	20.72
Granted, Exercised and Canceled	—	$	—
Options Outstanding at December 30, 2017	307	$	20.72	3.5 years	$	24,493
Vested and Exercisable at December 30, 2017	307	$	20.72	3.5 years	$	24,493


(a)	The closing price per share on the last trading day prior to year-end 2017 was $100.40.

Summary of Stock Option Exercises

A summary of the Company's stock option exercises in 2016 and 2015 is as follows:



(In thousands)	December 31, 2016		January 2, 2016
Total Intrinsic Value of Options Exercised	$	1,341	$	442
Cash Received from Options Exercised	$	1,189	$	284

Changes In Projected Benefit Obligations, Plan Assets, Unfunded Status, and Accumulated Other Comprehensive Items



	U.S. Pension						Non-U.S. Pension						Other Post-Retirement
(In thousands)	December 30, 2017			December 31, 2016			December 30, 2017			December 31, 2016			December 30, 2017			December 31, 2016
Change in Projected Benefit Obligation:
Projected benefit obligation at beginning of year	$	31,935		$	31,310		$	3,341		$	3,041		$	3,894		$	3,539
Acquisitions	—			—			241			380			—			—
Service cost	685			723			148			102			175			130
Interest cost	1,231			1,273			114			107			170			156
Actuarial loss	2,626			575			270			58			635			686
Benefits paid	(1,720		)	(1,946		)	(265		)	(63		)	(175		)	(180		)
Settlement payment	—			—			—			—			—			(415		)
Currency translation	—			—			421			(284		)	5			(22		)
Projected benefit obligation at end of year	$	34,757		$	31,935		$	4,270		$	3,341		$	4,704		$	3,894
Change in Plan Assets:
Fair value of plan assets at beginning of year	$	28,985		$	27,776		$	426		$	396		$	28		$	26
Actual return on plan assets	3,409			2,075			23			6			1			1
Employer contributions	1,080			1,080			355			159			179			601
Benefits paid	(1,720		)	(1,946		)	(265		)	(63		)	(175		)	(180		)
Settlement payment	—			—			—			—			—			(415		)
Currency translation	—			—			18			(72		)	2			(5		)
Fair value of plan assets at end of year	$	31,754		$	28,985		$	557		$	426		$	35		$	28
Unfunded Status	$	(3,003	)	$	(2,950	)	$	(3,713	)	$	(2,915	)	$	(4,669	)	$	(3,866	)
Accumulated Benefit Obligation at End of Year	$	30,311		$	27,573		$	3,047		$	2,549		$	—		$	—

Amounts Included in the Balance Sheet:
Current liability	$	—		$	—		$	(205	)	$	(194	)	$	(173	)	$	(183	)
Non-current liability	$	(3,003	)	$	(2,950	)	$	(3,508	)	$	(2,721	)	$	(4,496	)	$	(3,683	)

Amounts Included in Accumulated Other Comprehensive Items Before Tax:
Unrecognized net actuarial loss	$	(7,485	)	$	(7,383	)	$	(1,085	)	$	(784	)	$	(1,424	)	$	(872	)
Unrecognized prior service cost	—			(53		)	(52		)	(42		)	(439		)	(525		)
	$	(7,485	)	$	(7,436	)	$	(1,137	)	$	(826	)	$	(1,863	)	$	(1,397	)

Changes in Amounts Included in Accumulated Other Comprehensive Items Before Tax:
Current year net actuarial (loss) gain	$	(544	)	$	213		$	(277	)	$	(75	)	$	(634	)	$	(685	)
Amortization of prior service cost	53			55			6			4			88			88
Amortization of net actuarial loss	442			498			38			39			83			50
Settlement loss	—			—			—			—			—			114
Currency translation	—			—			(78		)	85			(3		)	(29		)
	$	(49	)	$	766		$	(311	)	$	53		$	(466	)	$	(462	)

Weighted-Average Assumptions Used to Determine the Benefit Obligation and Net Periodic Benefit Cost

The weighted-average assumptions used to determine net periodic benefit cost are as follows:



	U.S. Pension						Non-U.S. Pension						Other Post-Retirement
	U.S. Pension						Non-U.S. Pension						Other Post-Retirement
	December 30, 2017		December 31, 2016		January 2, 2016		December 30, 2017		December 31, 2016		January 2, 2016		December 30, 2017		December 31, 2016		January 2, 2016
Discount Rate	4.03	%	4.22	%	3.87	%	3.45	%	3.87	%	3.33	%	4.10	%	4.28	%	4.01	%
Expected Long-Term Return on Plan Assets	5.00	%	5.00	%	5.25	%	7.53	%	7.72	%	6.90	%	7.53	%	7.72	%	6.90	%
Rate of Compensation Increase	3.00	%	3.00	%	3.00	%	3.65	%	3.67	%	3.42	%	3.08	%	3.05	%	3.15	%

The weighted-average assumptions used to determine the benefit obligation are as follows:



	U.S. Pension				Non-U.S. Pension				Other Post-Retirement
	U.S. Pension				Non-U.S. Pension				Other Post-Retirement
	December 30, 2017		December 31, 2016		December 30, 2017		December 31, 2016		December 30, 2017		December 31, 2016
Discount rate	3.51	%	4.03	%	3.16	%	3.26	%	3.71	%	4.20	%
Rate of compensation increase	3.00	%	3.00	%	3.33	%	3.33	%	3.11	%	3.12	%

Benefit Obligations in Excess of Fair Value of Plan Assets

The projected benefit obligations and fair values of plan assets for the Company's pension plans with projected benefit obligations in excess of plan assets are as follows:



	U.S. Pension				Non-U.S. Pension
	U.S. Pension				Non-U.S. Pension
(In thousands)	December 30, 2017		December 31, 2016		December 30, 2017		December 31, 2016
Pension Plans with Projected Benefit Obligations in Excess of Plan Assets:
Projected benefit obligation	$	34,757	$	31,935	$	4,270	$	3,341
Fair value of plan assets	$	31,754	$	28,985	$	557	$	426

Accumulated Benefit Obligations in Excess of Plan Assets

The accumulated benefit obligations and fair values of plan assets for the Company's pension plans with accumulated benefit obligations in excess of plan assets are as follows:



	U.S. Pension				Non-U.S. Pension
	U.S. Pension				Non-U.S. Pension
(In thousands)	December 30, 2017		December 31, 2016		December 30, 2017		December 31, 2016
Pension Plans with Accumulated Benefit Obligations in Excess of Plan Assets:
Accumulated benefit obligation	$	—	$	—	$	3,047	$	2,549
Fair value of plan assets	$	—	$	—	$	557	$	426

Components of Net Periodic Benefit Cost (Income)

The components of net periodic benefit cost are as follows:



	U.S. Pension									Non-U.S. Pension									Other Post-Retirement
	U.S. Pension									Non-U.S. Pension									Other Post-Retirement
(In thousands)	December 30, 2017			December 31, 2016			January 2, 2016			December 30, 2017			December 31, 2016			January 2, 2016			December 30, 2017			December 31, 2016			January 2, 2016
Service cost	$	685		$	723		$	842		$	148		$	102		$	105		$	175		$	130		$	117
Interest cost	1,231			1,273			1,229			114			107			102			170			156			147
Expected return on plan assets	(1,326		)	(1,288		)	(1,421		)	(25		)	(25		)	(40		)	(2		)	(2		)	(2		)
Amortization of net actuarial loss	442			498			508			38			39			38			83			50			30
Amortization of prior service cost	53			55			55			6			4			4			88			88			88
Settlement loss	—			—			—			—			—			—			—			114			—
	$	1,085		$	1,261		$	1,213		$	281		$	227		$	209		$	514		$	536		$	380

Fair Values of Plan Assets

The fair values of the Company's noncontributory defined benefit retirement plan assets at year-end 2017 and year-end 2016 by asset category are as follows:



	December 30, 2017 Fair Value Measurement
(In thousands)	Quoted Prices in Active Markets (Level 1)		Significant Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Total
U.S. Pension Plan Assets:
Mutual Funds	$	22,323	$	—	$	—	$	22,323
Investments measured at NAV							9,431
Total assets at fair value							$	31,754

Non-U.S. Pension Plan Assets:
Mutual Funds	$	557	$	—	$	—	$	557
Total assets at fair value							$	557



	December 31, 2016 Fair Value Measurement
(In thousands)	Quoted Prices in Active Markets (Level 1)		Significant Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Total
U.S. Pension Plan Assets:
Mutual Funds	$	20,318	$	—	$	—	$	20,318
Investments measured at NAV							8,667
Total assets at fair value							$	28,985

Non-U.S. Pension Plan Assets:
Mutual Funds	$	426	$	—	$	—	$	426
Total assets at fair value							$	426

Target Asset Allocation of Plan Assets

The following target asset allocation has been established for the plan:



Asset Category	Minimum		Neutral		Maximum
Equity Securities	5	%	15	%	20	%
Debt Securities	80	%	85	%	95	%
Total			100	%

Estimated Future Benefit Payments

Estimated future benefit payments during the next five years and in aggregate for the five years thereafter are as follows:



					Other Post-retirement
(In thousands)	U.S. Pension		Non-U.S. Pension		Other Post-retirement
2018	$	1,500	$	282	$	179
2019	1,507		159		166
2020	4,402		139		332
2021	1,960		284		151
2022	1,606		370		155
2023-2027	12,606		2,337		3,707

Income Taxes (Tables)

12 Months Ended

Dec. 30, 2017

Income Tax Disclosure [Abstract]

Components of Income from Continuing Operations Before Income Taxes

The components of income from continuing operations before provision for income taxes are as follows:



(In thousands)	December 30, 2017		December 31, 2016		January 2, 2016
Domestic	$	2,797	$	6,196	$	13,076
Foreign	54,856		38,353		36,295
	$	57,653	$	44,549	$	49,371

Components of the Provision for Income Taxes from Continuing Operations

The components of the provision for income taxes from continuing operations are as follows:



(In thousands)	December 30, 2017			December 31, 2016			January 2, 2016
Current Provision:
Federal	$	7,835		$	535		$	4,693
Foreign	17,372			11,323			10,623
State	285			838			1,152
	25,492			12,696			16,468
Deferred Provision (Benefit):
Federal	4,682			1,738			45
Foreign	(3,563		)	(1,818		)	(1,378		)
State	(541		)	(533		)	(373		)
	578			(613		)	(1,706		)
	$	26,070		$	12,083		$	14,762

Provision for Income Taxes by Continuing and Discontinued Operation

The provision for income taxes included in the accompanying consolidated statement of income is as follows:



(In thousands)	December 30, 2017		December 31, 2016		January 2, 2016
Continuing Operations	$	26,070	$	12,083	$	14,762
Discontinued Operation	—		2		43
	$	26,070	$	12,085	$	14,805

Income Tax Reconciliation



(In thousands)	December 30, 2017			December 31, 2016			January 2, 2016
Provision for Income Taxes at Statutory Rate	$	20,179		$	15,592		$	17,279
Increases (Decreases) Resulting From:
State income taxes, net of federal tax	151			189			506
U.S. tax cost of foreign earnings	761			192			455
Foreign tax rate differential	(3,747		)	(3,921		)	(3,852		)
Provision for (reversal of) tax benefit reserves, net	1,517			(76		)	33
Change in valuation allowance	(341		)	(131		)	99
Nondeductible expenses	1,177			1,090			704
Research and development tax credits	(297		)	(229		)	(210		)
Excess tax benefit related to share-based compensation	(581		)	(553		)	—
Impact of the U.S. Tax Cuts and Jobs Act	7,093			—			—
Other	158			(70		)	(252		)
	$	26,070		$	12,083		$	14,762

Net Deferred Tax (Liability) Asset

Net deferred tax liability in the accompanying consolidated balance sheet consists of the following:



(In thousands)	December 30, 2017			December 31, 2016
Deferred Tax Asset:
Foreign, state, and alternative minimum tax credit carryforwards	$	185		$	161
Reserves and accruals	4,455			4,842
Net operating loss carryforwards	15,161			13,694
Inventory basis difference	3,265			3,005
Research and development	88			75
Employee compensation	2,610			4,966
Allowance for doubtful accounts	505			488
Revenue recognition	—			636
Other	59			249
Deferred tax asset, gross	26,328			28,116
Less: valuation allowance	(10,835		)	(10,863		)
Deferred tax asset, net	15,493			17,253
Deferred Tax Liability:
Goodwill and intangible assets	(32,120		)	(21,853		)
Fixed asset basis difference	(4,213		)	(4,325		)
Provision for unremitted foreign earnings	(2,718		)	—
Other	(554		)	(1,199		)
Deferred tax liability	(39,605		)	(27,377		)
Net deferred tax liability	$	(24,112	)	$	(10,124	)

Unrecognized Tax Benefits

A reconciliation of the beginning and ending amount of unrecognized tax benefits at year-end 2017 and year-end 2016 is as follows:



(In thousands)	December 30, 2017			December 31, 2016
Unrecognized Tax Benefits, Beginning of Year	$	5,467		$	5,052
Gross Increases—Tax Positions in Prior Periods	4			403
Gross Decreases—Tax Positions in Prior Periods	(22		)	(23		)
Gross Increases—Current-period Tax Positions	2,229			480
Lapses of Statutes of Limitations	(11		)	(359		)
Currency Translation	176			(86		)
Unrecognized Tax Benefits, End of Year	$	7,843		$	5,467

Long-Term Obligations (Tables)

12 Months Ended

Dec. 30, 2017

Debt Disclosure [Abstract]

Long-Term Obligations

Long-term obligations at year-end 2017 and year-end 2016 are as follows:



(In thousands)	December 30, 2017			December 31, 2016
Revolving Credit Facility, due 2022	$	237,011		$	61,494
Obligations Under Capital Lease, due 2018 to 2022	4,633			4,309
Other Borrowings, due 2018 to 2023	436			608
Total	242,080			66,411
Less: Current Maturities of Long-Term Obligations	(696		)	(643		)
Long-Term Obligations	$	241,384		$	65,768

Future minimum lease payments under capital lease obligations

The following schedule presents future minimum lease payments under the Company's capital lease obligations and the present value of the minimum lease payments as of year-end 2017.



(In thousands)	Capital Lease Obligations
2018	$	604
2019	597
2020	605
2021	567
2022	915
Total Minimum Lease Payments	$	3,288
Less: Imputed Interest	(249		)
Present Value of Minimum Lease Payments	$	3,039

- Definition

Tabular disclosure of long-debt instruments or arrangements, including identification, terms, features, collateral requirements and other information necessary to a fair presentation. These are debt arrangements that originally required repayment more than twelve months after issuance or greater than the normal operating cycle of the entity, if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=84159872&loc=d3e21475-112644

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 470
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=75038535&loc=d3e64711-112823

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(e),(f))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=64930739&loc=d3e28878-108400

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=84159872&loc=d3e21538-112644

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=84159872&loc=d3e21506-112644

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 1A
-URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28541-108399

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28551-108399

Reference 10: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=84159872&loc=d3e21521-112644

+ Details

Restructuring Costs and Other Income (Tables)

12 Months Ended

Dec. 30, 2017

Restructuring and Related Activities [Abstract]

Summary of Changes in Accrued Restructuring Costs

A summary of the changes in accrued restructuring costs included in other accrued expenses in the accompanying consolidated balance sheet are as follows:



(In thousands)	Severance Costs
2017 Restructuring Plan
Provision	$	203
Balance at December 30, 2017	$	203
2015 Restructuring Plans
Provision	$	344
Usage	(323		)
Currency translation	(21		)
Balance at January 2, 2016	$	—
2014 Restructuring Plans
Balance at January 3, 2015	$	47
Provision	171
Usage	(214		)
Currency translation	(4		)
Balance at January 2, 2016	$	—

Derivatives (Tables)

12 Months Ended

Dec. 30, 2017

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Fair Value of Derivative Instruments



		December 30, 2017					December 31, 2016
(In thousands)	Balance Sheet Location	Asset (Liability) (a)			Notional Amount (b)		Asset (Liability) (a)			Notional Amount
Derivatives Designated as Hedging Instruments:
Derivatives in an Asset Position:
Interest rate swap agreement	Other Long-Term Assets	$	126		$	10,000	$	62		$	10,000
Derivatives in a Liability Position:
Forward currency-exchange contracts	Other Current Liabilities	$	—		$	—	$	(41	)	$	2,380
Derivatives Not Designated as Hedging Instruments:
Derivatives in an Asset Position:
Forward currency-exchange contracts	Other Current Assets	$	17		$	1,244	$	2		$	227
Derivatives in a Liability Position:
Forward currency-exchange contracts	Other Current Liabilities	$	(16	)	$	2,049	$	(237	)	$	17,185


(a)	See Note 10 for the fair value measurements relating to these financial instruments.


(b)	The total notional amount is indicative of the level of the Company's derivative activity during 2017, except for the purchase of forward currency-exchange contracts entered into in the second quarter of 2017 in anticipation of consideration paid for the acquisition of NII FPG.

Activity in Accumulated Other Comprehensive Items (OCI)

The following table summarizes the activity in AOCI associated with the Company's derivative instruments designated as cash flow hedges as of and for the period ended December 30, 2017:



(In thousands)	Interest Rate Swap Agreements		Forward Currency- Exchange Contracts			Total
Unrealized Gain (Loss), Net of Tax, at December 31, 2016	$	40	$	(28	)	$	12
Loss reclassified to earnings (a)	20		64			84
Gain (loss) recognized in AOCI	19		(36		)	(17		)
Unrealized Gain, Net of Tax, at December 30, 2017	$	79	$	—		$	79


(a)	See Note 13 for the income statement classification.

Fair Value Measurements and Fair Value of Financial Instruments (Tables)

12 Months Ended

Dec. 30, 2017

Fair Value Disclosures [Abstract]

Fair Value of Assets and Liabilities Measured on a Recurring Basis

The following table presents the fair value hierarchy for those assets and liabilities measured at fair value on a recurring basis:



	Fair Value as of December 30, 2017
(In thousands)	Level 1		Level 2		Level 3		Total
Assets:
Money market funds and time deposits	$	17,728	$	—	$	—	$	17,728
Forward currency-exchange contracts	$	—	$	17	$	—	$	17
Interest rate swap agreement	$	—	$	126	$	—	$	126
Banker's acceptance drafts (a)	$	—	$	15,960	$	—	$	15,960
Liabilities:
Forward currency-exchange contracts	$	—	$	16	$	—	$	16



	Fair Value as of December 31, 2016
(In thousands)	Level 1		Level 2		Level 3		Total
Assets:
Money market funds and time deposits	$	10,855	$	—	$	—	$	10,855
Forward currency-exchange contracts	$	—	$	2	$	—	$	2
Interest rate swap agreement	$	—	$	62	$	—	$	62
Banker's acceptance drafts (a)	$	—	$	7,852	$	—	$	7,852
Liabilities:
Forward currency-exchange contracts	$	—	$	278	$	—	$	278


(a)	Included in accounts receivable in the accompanying consolidated balance sheet.

Carrying Value and Fair Value of Debt Obligations

The carrying value and fair value of the Company's long-term debt obligations are as follows:



	December 30, 2017				December 31, 2016
(In thousands)	Carrying Value		Fair Value		Carrying Value		Fair Value
Long-term Debt Obligations:
Revolving credit facility	$	237,011	$	237,011	$	61,494	$	61,494
Capital lease obligations	4,101		4,101		3,857		3,857
Other borrowings	272		272		417		417
	$	241,384	$	241,384	$	65,768	$	65,768

Business Segment and Geographical Information (Tables)

12 Months Ended

Dec. 30, 2017

Segment Reporting [Abstract]

Business Segment Information



(In thousands)	December 30, 2017			December 31, 2016			January 2, 2016
Business Segment Information
Revenues by Product Line:
Papermaking Systems:
Stock-Preparation	$	193,838		$	171,378		$	148,341
Doctoring, Cleaning, & Filtration	109,631			105,938			101,523
Fluid-Handling	104,136			89,145			92,797
Papermaking Systems	$	407,605		$	366,461		$	342,661
Wood Processing Systems	95,053			36,850			36,387
Fiber-based Products	12,375			10,815			11,059
	$	515,033		$	414,126		$	390,107
Income from Continuing Operations Before Provision for Income Taxes:
Papermaking Systems (a)	$	72,600		$	57,427		$	56,789
Wood Processing Systems (b)	9,690			8,327			10,926
Corporate and Fiber-based Products (c)	(21,537		)	(20,181		)	(17,596		)
Total operating income	60,753			45,573			50,119
Interest expense, net (d)	(3,100		)	(1,024		)	(748		)
	$	57,653		$	44,549		$	49,371



(In thousands)	December 30, 2017		December 31, 2016		January 2, 2016
Total Assets:
Papermaking Systems	$	494,919	$	407,538	$	354,417
Wood Processing Systems	257,467		52,407		53,347
Other (e)	8,708		10,746		7,734
	$	761,094	$	470,691	$	415,498

Depreciation and Amortization:
Papermaking Systems	$	11,239	$	11,513	$	7,898
Wood Processing Systems	7,515		2,188		2,384
Other	621		625		539
	$	19,375	$	14,326	$	10,821
Capital Expenditures:
Papermaking Systems	$	14,359	$	5,504	$	4,639
Wood Processing Systems	2,333		29		198
Other	589		271		642
	$	17,281	$	5,804	$	5,479



Geographical Information
Revenues (f):
United States	$	182,788	$	165,335	$	193,383
China	63,910		43,299		50,814
Canada	47,611		28,888		21,164
Germany	32,026		18,095		9,686
Other	188,698		158,509		115,060
	$	515,033	$	414,126	$	390,107
Long-lived Assets (g):
United States	$	32,852	$	18,482	$	17,373
China	11,685		10,714		12,278
Canada	9,449		1,125		1,312
Germany	6,452		5,792		63
Other	19,285		11,591		11,267
	$	79,723	$	47,704	$	42,293


(a)	Includes $787,000 in 2017 and $3,491,000 in 2016 of acquisition-related expenses. Acquisition-related expenses include acquisition transaction costs and amortization of acquired profit in inventory and backlog. Includes restructuring costs of $203,000 in 2017, other income of $317,000 in 2016, and restructuring costs of $515,000 in 2015 (see Note 8).


(b)	Includes $11,163,000 of acquisition-related expenses in 2017.


(c)	Corporate primarily includes general and administrative expenses.


(d)	The Company does not allocate interest expense, net to its segments.


(e)	Primarily includes Corporate and Fiber-based Products' cash and cash equivalents and property, plant, and equipment.


(f)	Revenues are attributed to countries based on customer location.


(g)	Represents property, plant, and equipment, net.

Earnings per Share (Tables)

12 Months Ended

Dec. 30, 2017

Earnings Per Share [Abstract]

Basic and Diluted Earnings Per Share

Basic and diluted EPS were calculated as follows:



(In thousands, except per share amounts)	December 30, 2017		December 31, 2016		January 2, 2016
Amounts Attributable to Kadant:
Income from Continuing Operations	$	31,092	$	32,074	$	34,315
Income from Discontinued Operation	—		3		74
Net Income Attributable to Kadant	$	31,092	$	32,077	$	34,389
Basic Weighted Average Shares	10,991		10,869		10,867
Effect of Stock Options, Restricted Stock Units and Employee Stock Purchase Plan	321		280		227
Diluted Weighted Average Shares	11,312		11,149		11,094
Basic EPS:
Continuing Operations	$	2.83	$	2.95	$	3.16
Discontinued Operation	$	—	$	—	$	0.01
Earnings per Basic Share	$	2.83	$	2.95	$	3.16
Diluted EPS:
Continuing Operations	$	2.75	$	2.88	$	3.09
Discontinued Operation	$	—	$	—	$	0.01
Earnings per Diluted Share	$	2.75	$	2.88	$	3.10

Accumulated Other Comprehensive Items (Tables)

12 Months Ended

Dec. 30, 2017

Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]

Components of Accumulated Other Comprehensive Items in the Balance Sheet

Changes in each component of AOCI, net of tax are as follows:



(In thousands)	Foreign Currency Translation Adjustment			Unrecognized Prior Service Cost			Deferred Loss on Pension and Other Post-Retirement Benefit Plans			Deferred Gain (Loss) on Hedging Instruments			Accumulated Other Comprehensive Items
Balance at December 31, 2016	$	(41,094	)	$	(397	)	$	(8,158	)	$	12		$	(49,637	)
Other comprehensive income (loss) before reclassifications	23,593			(17		)	(1,185		)	(17		)	22,374
Reclassifications from AOCI	—			95			369			84			548
Net current period other comprehensive income (loss)	23,593			78			(816		)	67			22,922
Balance at December 30, 2017	$	(17,501	)	$	(319	)	$	(8,974	)	$	79		$	(26,715	)

Reclassification Out of Accumulated Other Comprehensive Items

Amounts reclassified out of AOCI are as follows:



(In thousands)	December 30, 2017			December 31, 2016			January 2, 2016			Income Statement Line Item
Pension and Other Post-Retirement Plans (1)
Amortization of prior service costs	$	(147	)	$	(147	)	$	(147	)	SG&A expenses
Amortization of actuarial losses	(563		)	(701		)	(576		)	SG&A expenses
Total expense before income taxes	(710		)	(848		)	(723		)
Income tax benefit	246			295			249			Provision for income taxes
	(464		)	(553		)	(474		)
Cash Flow Hedges (2)
Interest rate swap agreements	(30		)	(174		)	(420		)	Interest expense
Forward currency-exchange contracts	—			(14		)	(12		)	Revenues
Forward currency-exchange contracts	(97		)	(186		)	—			Cost of revenues
Forward currency-exchange contracts	—			—			1,691			SG&A expenses
Total (expense) income before income taxes	(127		)	(374		)	1,259
Income tax benefit (provision)	43			(37		)	(150		)	Provision for income taxes
	(84		)	(411		)	1,109
Total Reclassifications	$	(548	)	$	(964	)	$	635


(1)	Included in the computation of net periodic benefit costs. See Note 3 for additional information.


(2)	See Note 9 for additional information.

Unaudited Quarterly Information (Tables)

12 Months Ended

Dec. 30, 2017

Quarterly Financial Information Disclosure [Abstract]

Unaudited Quarterly Financial Information



2017 (In thousands, except per share amounts)	First		Second		Third		Fourth
Revenues	$	102,857	$	110,242	$	152,794	$	149,140
Gross Profit	48,992		52,824		64,628		64,590

Net Income Attributable to Kadant	$	8,951	$	8,096	$	13,285	$	760
Basic Earnings per Share:
Net Income Attributable to Kadant	$	0.82	$	0.74	$	1.21	$	0.07
Diluted Earnings per Share:
Net Income Attributable to Kadant	$	0.80	$	0.72	$	1.17	$	0.07
Cash Dividends Declared per Common Share	$	0.21	$	0.21	$	0.21	$	0.21

2016 (In thousands, except per share amounts)	First		Second		Third		Fourth
Revenues	$	96,538	$	111,828	$	105,519	$	100,241
Gross Profit	43,976		50,261		48,079		46,073
Amounts Attributable to Kadant:
Income from Continuing Operations	6,876		8,311		9,154		7,733
Income from Discontinued Operation	—		—		3		—
Net Income Attributable to Kadant	$	6,876	$	8,311	$	9,157	$	7,733
Basic Earnings per Share:
Continuing Operations	$	0.64	$	0.76	$	0.84	$	0.71
Net Income Attributable to Kadant	$	0.64	$	0.76	$	0.84	$	0.71
Diluted Earnings per Share:
Continuing Operations	$	0.62	$	0.75	$	0.82	$	0.69
Net Income Attributable to Kadant	$	0.62	$	0.75	$	0.82	$	0.69
Cash Dividends Declared per Common Share	$	0.19	$	0.19	$	0.19	$	0.19

Nature of Operations and Summary of Significant Accounting Policies - Changes in the Allowance for Doubtful Accounts (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 30, 2017	Dec. 31, 2016	Jan. 02, 2016
Allowance for Doubtful Accounts Receivable [Roll Forward]
Balance at Beginning of Year	$ 2,395	$ 2,163	$ 2,198
Provision charged to expense	436	453	379
Accounts written off	(159)	(128)	(205)
Currency translation	207	(93)	(209)
Balance at End of Year	$ 2,879	$ 2,395	$ 2,163

Nature of Operations and Summary of Significant Accounting Policies - Product Warranty (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 30, 2017	Dec. 31, 2016
Changes in the carrying amount of accrued warranty costs [Roll Forward]
Balance at Beginning of Year	$ 3,843	$ 3,670
Provision charged to income	2,652	3,091
Usage	(2,225)	(3,632)
Acquisitions	790	991
Currency translation	438	(277)
Balance at End of Year	$ 5,498	$ 3,843

Nature of Operations and Summary of Significant Accounting Policies - Supplemental Cash Flow Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 30, 2017	Dec. 31, 2016	Jan. 02, 2016
Accounting Policies [Abstract]
Cash Paid for Interest	$ 2,624	$ 1,183	$ 616
Cash Paid for Income Taxes, Net of Refunds	20,559	15,632	11,497
Non-Cash Investing Activities:
Fair value of assets of acquired	242,048	84,969	0
Cash paid for acquired businesses	(206,950)	(58,894)	0
Liabilities assumed of acquired businesses	35,098	26,075	0
Non-cash purchases of property, plant, and equipment	4,620	379	614
Non-Cash Financing Activities:
Issuance of Company common stock upon vesting of RSUs	3,192	3,463	3,423
Dividends declared but unpaid	$ 2,316	$ 2,078	$ 1,831

Nature of Operations and Summary of Significant Accounting Policies - Inventory (Details) - USD ($) $ in Thousands	Dec. 30, 2017	Dec. 31, 2016
Accounting Policies [Abstract]
Raw Materials and Supplies	$ 38,952	$ 21,086
Work in Process	18,203	12,293
Finished Goods (includes $1,883 and $1,249 at customer locations)	27,778	21,572
Inventories	84,933	54,951
Finished goods, at customer locations	$ 1,883	$ 1,249

Nature of Operations and Summary of Significant Accounting Policies - Property, Plant and Equipment (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 30, 2017	Dec. 31, 2016	Jan. 02, 2016
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	$ 165,231	$ 124,424
Less: Accumulated Depreciation and Amortization	85,508	76,720
Property, Plant and Equipment, at Cost, Net	79,723	47,704
Amortization of assets under capital leases	7,418	6,194	$ 5,814
Land
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	7,894	4,827
Buildings
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	48,094	39,706
Machinery, Equipment, and Leasehold Improvements
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	94,779	78,953
Construction in Progress
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	14,464	938
Assets Held under Capital Leases
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	6,038	5,335
Less: Accumulated Depreciation and Amortization	$ 550	$ 221
Minimum \| Buildings
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	10 years
Minimum \| Machinery and Equipment
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	2 years
Maximum \| Buildings
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	40 years
Maximum \| Machinery and Equipment
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	10 years

Nature of Operations and Summary of Significant Accounting Policies - Intangible Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 30, 2017	Dec. 31, 2016
Acquired Finite-Lived Intangible Assets [Line Items]
Gross	$ 178,783	$ 101,743
Currency Translation	(1,655)	(8,073)
Accumulated Amortization	(60,997)	(49,040)
Net	116,131	44,630
Acquired Intangible Assets
Gross	195,383	109,843
Currency Translation	(1,350)	(8,073)
Net	133,036	52,730
Tradenames
Acquired Indefinite-lived Intangible Assets [Line Items]
Gross	16,905	8,100
Currency Translation	305	0
Net	16,600	8,100
Customer relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Gross	113,301	59,101
Currency Translation	(621)	(5,202)
Accumulated Amortization	(28,789)	(21,805)
Net	83,891	32,094
Product technology
Acquired Finite-Lived Intangible Assets [Line Items]
Gross	46,501	27,101
Currency Translation	(737)	(2,052)
Accumulated Amortization	(19,841)	(17,105)
Net	25,923	7,944
Tradenames
Acquired Finite-Lived Intangible Assets [Line Items]
Gross	5,227	4,447
Currency Translation	(262)	(591)
Accumulated Amortization	(1,504)	(1,065)
Net	3,461	2,791
Other
Acquired Finite-Lived Intangible Assets [Line Items]
Gross	13,754	11,094
Currency Translation	(35)	(228)
Accumulated Amortization	(10,863)	(9,065)
Net	$ 2,856	$ 1,801

Nature of Operations and Summary of Significant Accounting Policies - Goodwill (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 30, 2017	Dec. 31, 2016
Goodwill [Roll Forward]
Gross Balance, Beginning Balance	$ 236,964	$ 204,560
Accumulated impairment losses	(85,509)	(85,509)
Net Balance, Beginning Balance	151,455	119,051
Increase Due to Acquisition	101,881	38,552
Currency Translation	14,665	(6,148)
Goodwill period adjustments	116,546	32,404
Gross Balance, Ending Balance	353,510	236,964
Accumulated impairment losses	(85,509)	(85,509)
Net Balance, Ending Balance	268,001	151,455
Stock-Preparation
Goodwill [Roll Forward]
Net Balance, Beginning Balance	54,751
Net Balance, Ending Balance	60,275	54,751
Doctoring, Cleaning, & Filtration
Goodwill [Roll Forward]
Net Balance, Beginning Balance	33,839
Net Balance, Ending Balance	35,941	33,839
Fluid-Handling
Goodwill [Roll Forward]
Net Balance, Beginning Balance	45,600
Net Balance, Ending Balance	65,289	45,600
Operating Segments \| Papermaking systems segment
Goodwill [Roll Forward]
Gross Balance, Beginning Balance	219,699	187,720
Accumulated impairment losses	(85,509)	(85,509)
Net Balance, Beginning Balance	134,190	102,211
Increase Due to Acquisition	16,373	38,552
Currency Translation	10,942	(6,573)
Goodwill period adjustments	27,315	31,979
Gross Balance, Ending Balance	247,014	219,699
Accumulated impairment losses	(85,509)	(85,509)
Net Balance, Ending Balance	161,505	134,190
Operating Segments \| Wood Processing Systems
Goodwill [Roll Forward]
Gross Balance, Beginning Balance	17,265	16,840
Accumulated impairment losses	0	0
Net Balance, Beginning Balance	17,265	16,840
Increase Due to Acquisition	85,508	0
Currency Translation	3,723	425
Goodwill period adjustments	89,231	425
Gross Balance, Ending Balance	106,496	17,265
Accumulated impairment losses	0	0
Net Balance, Ending Balance	$ 106,496	$ 17,265

Nature of Operations and Summary of Significant Accounting Policies - Additional Information (Details)	12 Months Ended
	Dec. 30, 2017 USD ($) Segment	Dec. 31, 2016 USD ($)	Jan. 02, 2016 USD ($)
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Number of reportable segments \| Segment	2
Percentage of completion revenue	$ 27,676,000	$ 23,300,000	$ 32,078,000
Advance payments on long-term contracts	2,945,000	5,158,000
Due from bankers acceptances drafts	15,960,000	7,852,000
Restricted cash	$ 1,421,000	2,082,000
Weighted average useful life of acquired intangible assets	12 years
Amortization expense of acquired intangible assets	$ 11,957,000	8,132,000	$ 5,007,000
Estimated Future Amortization Expense [Abstract]
2018	14,409,000
2019	13,482,000
2020	12,882,000
2021	12,340,000
2022	11,536,000
Thereafter	51,482,000
Goodwill and Intangible Asset Impairment [Abstract]
Goodwill impairment	0	0
Impairment of intangible assets	0	0
Recent Accounting Pronouncements [Abstract]
Reduction to retained earnings	(342,893,000)	$ (321,050,000)
Difference between Revenue Guidance in Effect before and after Topic 606 \| Accounting Standards Update 2014-09 \| Minimum \| Pro Forma
Recent Accounting Pronouncements [Abstract]
Reduction to retained earnings	100,000
Difference between Revenue Guidance in Effect before and after Topic 606 \| Accounting Standards Update 2014-09 \| Maximum \| Pro Forma
Recent Accounting Pronouncements [Abstract]
Reduction to retained earnings	$ 300,000
Joint Venture with an Italian Company
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Ownership interest	50.00%
Remaining ownership interest with an option to purchase	50.00%

Acquisitions - Purchase Price Allocation (Details) - USD ($) $ in Thousands					3 Months Ended	12 Months Ended
	Oct. 30, 2017	Aug. 14, 2017	Jul. 05, 2017	Apr. 04, 2016	Dec. 30, 2017	Dec. 30, 2017	Dec. 31, 2016	Jan. 02, 2016
Net Assets Acquired:
Goodwill					$ 268,001	$ 268,001	$ 151,455	$ 119,051
Purchase Price:
Cash						206,950	$ 58,894	$ 0
2017 Acquisitions
Net Assets Acquired:
Cash and Cash Equivalents					2,219	2,219
Accounts Receivable					8,621	8,621
Inventories					26,950	26,950
Property, Plant & Equipment					14,390	14,390
Other Assets					2,447	2,447
Goodwill					101,881	101,881
Total assets acquired					242,048	242,048
Accounts Payable					5,328	5,328
Customer Deposits					7,496	7,496
Long-Term Deferred Income Taxes					16,668	16,668
Other Liabilities					5,771	5,771
Total Liabilities Assumed					35,263	35,263
Net assets acquired					206,785	206,785
Purchase Price:
Cash						2,993
Cash Paid to Seller Borrowed Under the Revolving Credit Facility						203,792
Total purchase price						206,785
2017 Acquisitions \| Tradenames
Net Assets Acquired:
Indefinite-Lived Intangible Assets					8,500	8,500
2017 Acquisitions \| Customer relationships
Net Assets Acquired:
Definite-Lived Intangible Assets					54,200	54,200
2017 Acquisitions \| Product technology
Net Assets Acquired:
Definite-Lived Intangible Assets					19,400	19,400
2017 Acquisitions \| Other
Net Assets Acquired:
Definite-Lived Intangible Assets					3,440	3,440
NII FPG
Net Assets Acquired:
Cash and Cash Equivalents			$ 2,219
Accounts Receivable			6,542
Inventories			25,246
Property, Plant & Equipment			12,912
Other Assets			2,375
Goodwill			85,508
Total assets acquired			207,642
Accounts Payable			4,970
Customer Deposits			7,396
Long-Term Deferred Income Taxes			16,668
Other Liabilities			5,597
Total Liabilities Assumed			34,631
Net assets acquired			173,011
Purchase Price:
Cash			2,993
Cash Paid to Seller Borrowed Under the Revolving Credit Facility			170,018
Total purchase price			173,011
NII FPG \| Tradenames
Net Assets Acquired:
Indefinite-Lived Intangible Assets			8,500
NII FPG \| Customer relationships
Net Assets Acquired:
Definite-Lived Intangible Assets			44,700
NII FPG \| Product technology
Net Assets Acquired:
Definite-Lived Intangible Assets			17,100
NII FPG \| Other
Net Assets Acquired:
Definite-Lived Intangible Assets			$ 2,540
Unaflex
Net Assets Acquired:
Cash and Cash Equivalents		$ 0
Accounts Receivable		2,079
Inventories		1,704
Property, Plant & Equipment		1,194
Other Assets		72
Goodwill		15,657
Total assets acquired		31,906
Accounts Payable		358
Customer Deposits		100
Long-Term Deferred Income Taxes		0
Other Liabilities		174
Total Liabilities Assumed		632
Net assets acquired		31,274
Purchase Price:
Cash		0
Cash Paid to Seller Borrowed Under the Revolving Credit Facility		31,274
Total purchase price		31,274
Unaflex \| Tradenames
Net Assets Acquired:
Indefinite-Lived Intangible Assets		0
Unaflex \| Customer relationships
Net Assets Acquired:
Definite-Lived Intangible Assets		8,000
Unaflex \| Product technology
Net Assets Acquired:
Definite-Lived Intangible Assets		2,300
Unaflex \| Other
Net Assets Acquired:
Definite-Lived Intangible Assets		$ 900
Other
Net Assets Acquired:
Cash and Cash Equivalents	$ 0
Accounts Receivable	0
Inventories	0
Property, Plant & Equipment	284
Other Assets	0
Goodwill	716
Total assets acquired	2,500
Accounts Payable	0
Customer Deposits	0
Long-Term Deferred Income Taxes	0
Other Liabilities	0
Total Liabilities Assumed	0
Net assets acquired	2,500
Purchase Price:
Cash	0
Cash Paid to Seller Borrowed Under the Revolving Credit Facility	2,500				$ 2,500
Total purchase price	2,500
Other \| Tradenames
Net Assets Acquired:
Indefinite-Lived Intangible Assets	0
Other \| Customer relationships
Net Assets Acquired:
Definite-Lived Intangible Assets	1,500
Other \| Product technology
Net Assets Acquired:
Definite-Lived Intangible Assets	0
Other \| Other
Net Assets Acquired:
Definite-Lived Intangible Assets	$ 0
PAAL
Net Assets Acquired:
Cash and Cash Equivalents				$ 2,277
Accounts Receivable				5,441
Inventories				3,947
Property, Plant & Equipment				7,179
Other Assets				2,882
Goodwill				38,552
Total assets acquired				84,969
Accounts Payable				5,536
Customer Deposits				2,471
Obligations Under Capital Lease				4,842
Long-Term Deferred Income Taxes				6,148
Other Liabilities				6,913
Total Liabilities Assumed				25,910
Net assets acquired				59,059
Purchase Price:
Cash				29,193		$ 165
Cash Paid to Seller Borrowed Under the Revolving Credit Facility				29,866
Total purchase price				59,059
PAAL \| Customer relationships
Net Assets Acquired:
Definite-Lived Intangible Assets				15,831
PAAL \| Product technology
Net Assets Acquired:
Definite-Lived Intangible Assets				4,203
PAAL \| Tradenames
Net Assets Acquired:
Definite-Lived Intangible Assets				2,278
PAAL \| Other
Net Assets Acquired:
Definite-Lived Intangible Assets				$ 2,379

Acquisitions - Additional Information (Details) € in Thousands						3 Months Ended	5 Months Ended	6 Months Ended	9 Months Ended	12 Months Ended
	Oct. 30, 2017 USD ($)	Aug. 14, 2017 USD ($)	Jul. 05, 2017 USD ($) facility	Apr. 04, 2016 USD ($)	Apr. 04, 2016 EUR (€)	Dec. 30, 2017 USD ($)	Dec. 30, 2017 USD ($)	Dec. 30, 2017 USD ($)	Dec. 31, 2016 USD ($)	Dec. 30, 2017 USD ($)	Dec. 31, 2016 USD ($)	Jan. 02, 2016 USD ($)
Business Acquisition [Line Items]
Acquisition transaction costs										$ 5,375,000	$ 1,832,000
Goodwill						$ 268,001,000	$ 268,001,000	$ 268,001,000	$ 151,455,000	268,001,000	151,455,000	$ 119,051,000
Payments to acquire businesses, net										204,731,000	56,617,000	0
Increase to goodwill										$ 1,282,000
Weighted average useful life of acquired intangible assets										12 years
Cash payments in acquisition										$ 206,950,000	$ 58,894,000	$ 0
Revolving credit facility \| Canadian Denominated Borrowing
Business Acquisition [Line Items]
Proceeds from revolving credit facility										70,691,000
Revolving credit facility \| Euro-Denominated Borrowing
Business Acquisition [Line Items]
Proceeds from revolving credit facility				$ 29,866,000						$ 61,769,000
Unaflex
Business Acquisition [Line Items]
Cash Paid to Seller Borrowed Under the Revolving Credit Facility		$ 31,274,000
Revenues reported by acquired entity		17,494,000
Goodwill		$ 15,657,000
Revenue from the date of acquisition							7,335,000
Operating income from date of acquisition							187,000
Amortization expense							$ 176,000
Weighted average useful life of acquired intangible assets		10 years
Cash payments in acquisition		$ 0
NII FPG
Business Acquisition [Line Items]
Cash Paid to Seller Borrowed Under the Revolving Credit Facility			$ 170,018,000
Revenues reported by acquired entity			81,000,000
Goodwill			85,508,000
Revenue from the date of acquisition								48,363,000
Operating income from date of acquisition								1,238,000
Amortization expense								$ 6,399,000
Payments to acquire businesses, net			$ 170,792,000
Number of primary manufacturing facilities \| facility			2
Goodwill, expected tax deductible amount			$ 33,228,000
Weighted average useful life of acquired intangible assets			12 years
Cash payments in acquisition			$ 2,993,000
NII FPG \| Product technology
Business Acquisition [Line Items]
Weighted average useful life of acquired intangible assets			15 years
NII FPG \| Customer relationships
Business Acquisition [Line Items]
Weighted average useful life of acquired intangible assets			11 years
NII FPG \| Other intangibles
Business Acquisition [Line Items]
Weighted average useful life of acquired intangible assets			4 years
NII FPG \| Revolving credit facility \| Canadian Denominated Borrowing
Business Acquisition [Line Items]
Cash Paid to Seller Borrowed Under the Revolving Credit Facility			$ 62,690,000
NII FPG \| Revolving credit facility \| Euro-Denominated Borrowing
Business Acquisition [Line Items]
Cash Paid to Seller Borrowed Under the Revolving Credit Facility			$ 61,769,000
Other
Business Acquisition [Line Items]
Cash Paid to Seller Borrowed Under the Revolving Credit Facility	$ 2,500,000					$ 2,500,000
Goodwill	716,000
Cash payments in acquisition	$ 0
Other \| Customer relationships
Business Acquisition [Line Items]
Weighted average useful life of acquired intangible assets	11 years
PAAL
Business Acquisition [Line Items]
Cash Paid to Seller Borrowed Under the Revolving Credit Facility				29,866,000
Goodwill				38,552,000
Revenue from the date of acquisition									40,783,000
Operating income from date of acquisition									2,372,000
Amortization expense									$ 1,926,000
Payments to acquire businesses, net				56,617,000	€ 49,713
Weighted average useful life of acquired intangible assets										12 years
Cash payments in acquisition				$ 29,193,000						$ 165,000
PAAL \| Product technology
Business Acquisition [Line Items]
Weighted average useful life of acquired intangible assets										9 years
PAAL \| Customer relationships
Business Acquisition [Line Items]
Weighted average useful life of acquired intangible assets										13 years
PAAL \| Tradenames
Business Acquisition [Line Items]
Weighted average useful life of acquired intangible assets										14 years
PAAL \| Other intangibles
Business Acquisition [Line Items]
Weighted average useful life of acquired intangible assets										7 years

Acquisitions - Pro Forma Information (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 30, 2017	Sep. 30, 2017	Jul. 01, 2017	Apr. 01, 2017	Dec. 31, 2016	Oct. 01, 2016	Jul. 02, 2016	Apr. 02, 2016	Dec. 30, 2017	Dec. 31, 2016	Jan. 02, 2016
Earnings per Share Attributable to Kadant:
Nonrecurring adjustments	$ 760	$ 13,285	$ 8,096	$ 8,951	$ 7,733	$ 9,157	$ 8,311	$ 6,876	$ 31,092	$ 32,077	$ 34,389
NII FPG and Unaflex, LLC
Business Acquisition, Pro Forma Information, Nonrecurring Adjustment [Line Items]
Revenues									565,710	508,832
Net Income Attributable to Kadant									$ 44,159	$ 30,638
Earnings per Share Attributable to Kadant:
Basic (in dollars per share)									$ 4.02	$ 2.82
Diluted (in dollars per share)									$ 3.90	$ 2.75
NII FPG and Unaflex, LLC \| Acquisition-related transaction costs
Earnings per Share Attributable to Kadant:
Nonrecurring adjustments									$ 5,360	$ (5,360)
NII FPG and Unaflex, LLC \| Inventory revalued
Earnings per Share Attributable to Kadant:
Nonrecurring adjustments									5,137	(5,137)
NII FPG and Unaflex, LLC \| Intangible amortization related to acquired backlog
Earnings per Share Attributable to Kadant:
Nonrecurring adjustments									1,438	(1,669)
NII FPG and Unaflex, LLC \| Gain on sale of building
Earnings per Share Attributable to Kadant:
Nonrecurring adjustments									$ (852)
PAAL
Business Acquisition, Pro Forma Information, Nonrecurring Adjustment [Line Items]
Revenues										427,273	444,350
Net Income Attributable to Kadant										$ 35,321	$ 33,881
Earnings per Share Attributable to Kadant:
Basic (in dollars per share)										$ 3.25	$ 3.12
Diluted (in dollars per share)										$ 3.17	$ 3.05
PAAL \| Acquisition-related transaction costs
Earnings per Share Attributable to Kadant:
Nonrecurring adjustments										$ 1,832	$ (1,832)
PAAL \| Inventory revalued
Earnings per Share Attributable to Kadant:
Nonrecurring adjustments										458	(458)
PAAL \| Intangible amortization related to acquired backlog
Earnings per Share Attributable to Kadant:
Nonrecurring adjustments										1,468	(1,468)
PAAL \| Pre-acquisition debt
Earnings per Share Attributable to Kadant:
Nonrecurring adjustments										$ 454	$ 1,636

Employee Benefit Plans - Components Stock-Based Compensation Expense (Details) - Selling, general and administrative expenses - USD ($) $ in Thousands	12 Months Ended
	Dec. 30, 2017	Dec. 31, 2016	Jan. 02, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	$ 5,803	$ 5,069	$ 5,741
Restricted Stock Unit Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	5,621	4,848	5,185
Employee Stock Purchase Plan Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	182	170	136
Stock Option Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	$ 0	$ 51	$ 420

Employee Benefit Plans - Activity of the Unvested RSUs (Details) - Restricted Stock Unit Awards - $ / shares shares in Thousands	12 Months Ended
	Dec. 30, 2017	Dec. 31, 2016	Jan. 02, 2016
Units
Unvested RSUs at beginning of year (in shares)	203
Granted (in shares)	110
Vested (in shares)	(111)
Forfeited / expired (in shares)	(3)
Unvested RSU's at end of year (in shares)	199	203
Weighted Average Grant- Date Fair Value
Weighted average grant date fair value, balance at beginning of year (in dollars per share)	$ 40.23
Weighted average grant date fair value, granted (in dollars per share)	59.30	$ 40.41	$ 44.75
Weighted average grant date fair value, vested (in dollars per share)	42.81
Weighted average grant date fair value, forfeited / expired (in dollars per share)	43.75
Weighted average grant date fair value, balance at end of year (in dollars per share)	$ 49.32	$ 40.23

Employee Benefit Plans - Stock Option Activity (Details) - Stock Option Awards $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 30, 2017 USD ($) $ / shares shares
Number of Shares
Options Outstanding, Beginning Balance (in shares) \| shares	307
Granted, Exercised and Canceled (in shares) \| shares	0
Options Outstanding, Ending Balance (in shares) \| shares	307
Vested and Exercisable at end of year (in shares) \| shares	307
Weighted Average Exercise Price
Options Outstanding, Beginning Balance (in dollars per share) \| $ / shares	$ 20.72
Granted, Exercised and Canceled (in dollars per share) \| $ / shares	0.00
Options Outstanding, Ending Balance (in dollars per share) \| $ / shares	20.72
Vested and Exercisable at end of year (in dollars per share) \| $ / shares	$ 20.72
Additional Information:
Weighted average remaining contractual life, options outstanding at end of year	3 years 6 months
Weighted average remaining contractual life, vested and exercisable at end of year	3 years 6 months
Aggregate intrinsic value, options outstanding at end of year \| $	$ 24,493
Aggregate intrinsic value, vested and exercisable at end of year \| $	$ 24,493

Employee Benefit Plans - Stock Option Exercises (Details) - Stock Option Awards - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Jan. 02, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total Intrinsic Value of Options Exercised	$ 1,341	$ 442
Cash Received From Options Exercised	$ 1,189	$ 284

Employee Benefit Plans - Changes in Plans and AOCI Impacts (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 30, 2017	Dec. 31, 2016	Jan. 02, 2016
Pension benefits \| U.S. Pension
Change in Projected Benefit Obligation:
Projected benefit obligation at beginning of year	$ 31,935	$ 31,310
Acquisitions	0	0
Service cost	685	723	$ 842
Interest cost	1,231	1,273	1,229
Actuarial loss	2,626	575
Benefits paid	(1,720)	(1,946)
Settlement payment	0	0
Currency translation	0	0
Projected benefit obligation at end of year	34,757	31,935	31,310
Change in Plan Assets:
Fair value of plan assets at beginning of year	28,985	27,776
Actual return on plan assets	3,409	2,075
Employer contributions	1,080	1,080
Benefits paid	(1,720)	(1,946)
Settlement payment	0	0
Currency translation	0	0
Fair value of plan assets at end of year	31,754	28,985	27,776
Unfunded Status	(3,003)	(2,950)
Accumulated Benefit Obligation at End of Year	30,311	27,573
Current liability	0	0
Non-current liability	(3,003)	(2,950)
Unrecognized net actuarial loss	(7,485)	(7,383)
Unrecognized prior service cost	0	(53)
Total	(7,485)	(7,436)
Current year net actuarial (loss) gain	(544)	213
Amortization of prior service cost	53	55
Amortization of net actuarial loss	442	498
Settlement loss	0	0
Currency translation	0	0
Total	(49)	766
Pension benefits \| Non-U.S. Pension
Change in Projected Benefit Obligation:
Projected benefit obligation at beginning of year	3,341	3,041
Acquisitions	241	380
Service cost	148	102	105
Interest cost	114	107	102
Actuarial loss	270	58
Benefits paid	(265)	(63)
Settlement payment	0	0
Currency translation	421	(284)
Projected benefit obligation at end of year	4,270	3,341	3,041
Change in Plan Assets:
Fair value of plan assets at beginning of year	426	396
Actual return on plan assets	23	6
Employer contributions	355	159
Benefits paid	(265)	(63)
Settlement payment	0	0
Currency translation	18	(72)
Fair value of plan assets at end of year	557	426	396
Unfunded Status	(3,713)	(2,915)
Accumulated Benefit Obligation at End of Year	3,047	2,549
Current liability	(205)	(194)
Non-current liability	(3,508)	(2,721)
Unrecognized net actuarial loss	(1,085)	(784)
Unrecognized prior service cost	(52)	(42)
Total	(1,137)	(826)
Current year net actuarial (loss) gain	(277)	(75)
Amortization of prior service cost	6	4
Amortization of net actuarial loss	38	39
Settlement loss	0	0
Currency translation	(78)	85
Total	(311)	53
Other Post-Retirement
Change in Projected Benefit Obligation:
Projected benefit obligation at beginning of year	3,894	3,539
Acquisitions	0	0
Service cost	175	130	117
Interest cost	170	156	147
Actuarial loss	635	686
Benefits paid	(175)	(180)
Settlement payment	0	(415)
Currency translation	5	(22)
Projected benefit obligation at end of year	4,704	3,894	3,539
Change in Plan Assets:
Fair value of plan assets at beginning of year	28	26
Actual return on plan assets	1	1
Employer contributions	179	601
Benefits paid	(175)	(180)
Settlement payment	0	(415)
Currency translation	2	(5)
Fair value of plan assets at end of year	35	28	$ 26
Unfunded Status	(4,669)	(3,866)
Accumulated Benefit Obligation at End of Year	0	0
Current liability	(173)	(183)
Non-current liability	(4,496)	(3,683)
Unrecognized net actuarial loss	(1,424)	(872)
Unrecognized prior service cost	(439)	(525)
Total	(1,863)	(1,397)
Current year net actuarial (loss) gain	(634)	(685)
Amortization of prior service cost	88	88
Amortization of net actuarial loss	83	50
Settlement loss	0	114
Currency translation	(3)	(29)
Total	$ (466)	$ (462)

Employee Benefit Plans - Weighted-Average Assumptions Used (Details)	12 Months Ended
	Dec. 30, 2017	Dec. 31, 2016	Jan. 02, 2016
Pension benefits \| U.S. Pension
Weighted-average assumptions used to determine the benefit obligation
Discount rate	3.51%	4.03%
Rate of compensation increase	3.00%	3.00%
Weighted-average assumptions used to determine net periodic benefit cost
Discount Rate	4.03%	4.22%	3.87%
Expected Long-Term Return on Plan Assets	5.00%	5.00%	5.25%
Rate of Compensation Increase	3.00%	3.00%	3.00%
Pension benefits \| Non-U.S. Pension
Weighted-average assumptions used to determine the benefit obligation
Discount rate	3.16%	3.26%
Rate of compensation increase	3.33%	3.33%
Weighted-average assumptions used to determine net periodic benefit cost
Discount Rate	3.45%	3.87%	3.33%
Expected Long-Term Return on Plan Assets	7.53%	7.72%	6.90%
Rate of Compensation Increase	3.65%	3.67%	3.42%
Other Post-Retirement
Weighted-average assumptions used to determine the benefit obligation
Discount rate	3.71%	4.20%
Rate of compensation increase	3.11%	3.12%
Weighted-average assumptions used to determine net periodic benefit cost
Discount Rate	4.10%	4.28%	4.01%
Expected Long-Term Return on Plan Assets	7.53%	7.72%	6.90%
Rate of Compensation Increase	3.08%	3.05%	3.15%

Employee Benefit Plans - Plans with Projected Benefit Obligations in Excess of Fair Value of Plan Assets (Details) - Pension benefits - USD ($) $ in Thousands	Dec. 30, 2017	Dec. 31, 2016
U.S. Pension
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Projected benefit obligation	$ 34,757	$ 31,935
Fair value of plan assets	31,754	28,985
Non-U.S. Pension
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Projected benefit obligation	4,270	3,341
Fair value of plan assets	$ 557	$ 426

Employee Benefit Plans - Plans with Accumulated Benefit Obligations in Excess of Plan Assets (Details) - Pension benefits - USD ($) $ in Thousands	Dec. 30, 2017	Dec. 31, 2016
U.S. Pension
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Accumulated benefit obligation	$ 0	$ 0
Fair value of plan assets	0	0
Non-U.S. Pension
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Accumulated benefit obligation	3,047	2,549
Fair value of plan assets	$ 557	$ 426

Employee Benefit Plans - Components of Net Periodic Benefit Cost (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 30, 2017	Dec. 31, 2016	Jan. 02, 2016
Other Post-Retirement
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Service cost	$ 175	$ 130	$ 117
Interest cost	170	156	147
Expected return on plan assets	(2)	(2)	(2)
Amortization of net actuarial loss	83	50	30
Amortization of prior service cost	88	88	88
Settlement loss	0	114	0
Net Periodic Benefit Cost	514	536	380
U.S. Pension \| Pension benefits
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Service cost	685	723	842
Interest cost	1,231	1,273	1,229
Expected return on plan assets	(1,326)	(1,288)	(1,421)
Amortization of net actuarial loss	442	498	508
Amortization of prior service cost	53	55	55
Settlement loss	0	0	0
Net Periodic Benefit Cost	1,085	1,261	1,213
Non-U.S. Pension \| Pension benefits
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Service cost	148	102	105
Interest cost	114	107	102
Expected return on plan assets	(25)	(25)	(40)
Amortization of net actuarial loss	38	39	38
Amortization of prior service cost	6	4	4
Settlement loss	0	0	0
Net Periodic Benefit Cost	$ 281	$ 227	$ 209

Employee Benefit Plans - Fair Value of Plan Assets (Details) - Pension benefits - USD ($) $ in Thousands	Dec. 30, 2017	Dec. 31, 2016	Jan. 02, 2016
U.S. Pension
Defined Benefit Plan Disclosure [Line Items]
Investments measured at NAV	$ 9,431	$ 8,667
Total assets at fair value	31,754	28,985	$ 27,776
U.S. Pension \| Mutual Funds
Defined Benefit Plan Disclosure [Line Items]
Total assets at fair value	22,323	20,318
U.S. Pension \| Mutual Funds \| Level 1
Defined Benefit Plan Disclosure [Line Items]
Total assets at fair value	22,323	20,318
U.S. Pension \| Mutual Funds \| Level 2
Defined Benefit Plan Disclosure [Line Items]
Total assets at fair value	0	0
U.S. Pension \| Mutual Funds \| Level 3
Defined Benefit Plan Disclosure [Line Items]
Total assets at fair value	0	0
Non-U.S. Pension
Defined Benefit Plan Disclosure [Line Items]
Total assets at fair value	557	426	$ 396
Non-U.S. Pension \| Mutual Funds
Defined Benefit Plan Disclosure [Line Items]
Total assets at fair value	557	426
Non-U.S. Pension \| Mutual Funds \| Level 1
Defined Benefit Plan Disclosure [Line Items]
Total assets at fair value	557	426
Non-U.S. Pension \| Mutual Funds \| Level 2
Defined Benefit Plan Disclosure [Line Items]
Total assets at fair value	0	0
Non-U.S. Pension \| Mutual Funds \| Level 3
Defined Benefit Plan Disclosure [Line Items]
Total assets at fair value	$ 0	$ 0

Employee Benefit Plans - Target Asset Allocation of Plan Assets (Details) - Pension benefits	Dec. 30, 2017
Defined Benefit Plan Disclosure [Line Items]
Target asset allocation	100.00%
Equity Securities
Defined Benefit Plan Disclosure [Line Items]
Target asset allocation	15.00%
Equity Securities \| Minimum
Defined Benefit Plan Disclosure [Line Items]
Target asset allocation	5.00%
Equity Securities \| Maximum
Defined Benefit Plan Disclosure [Line Items]
Target asset allocation	20.00%
Debt Securities
Defined Benefit Plan Disclosure [Line Items]
Target asset allocation	85.00%
Debt Securities \| Minimum
Defined Benefit Plan Disclosure [Line Items]
Target asset allocation	80.00%
Debt Securities \| Maximum
Defined Benefit Plan Disclosure [Line Items]
Target asset allocation	95.00%

Employee Benefit Plans - Estimated Future Benefit Payments (Details) $ in Thousands	Dec. 30, 2017 USD ($)
Other Post-Retirement
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
2018	$ 179
2019	166
2020	332
2021	151
2022	155
2023-2027	3,707
U.S. Pension \| Pension benefits
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
2018	1,500
2019	1,507
2020	4,402
2021	1,960
2022	1,606
2023-2027	12,606
Non-U.S. Pension \| Pension benefits
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
2018	282
2019	159
2020	139
2021	284
2022	370
2023-2027	$ 2,337

Employee Benefit Plans - Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands			3 Months Ended			9 Months Ended	12 Months Ended
	Sep. 20, 2017	Mar. 09, 2015	Apr. 01, 2017	Apr. 02, 2016	Apr. 04, 2015	Jul. 01, 2018	Dec. 30, 2017	Dec. 31, 2016	Jan. 02, 2016
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Number of shares available for grant							486,681
Tax benefits related to employees' and directors' stock plans									$ 881
Share price (in dollars per share)							$ 100.4
Cost recognized, defined contribution plan							$ 3,327	$ 3,005	$ 2,749
Pension benefits
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Future amortization of loss							665
Future amortization of prior service cost (credit)							93
Pension benefits \| U.S. Pension
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Estimated future employer contribution, next year							$ 0
Pension benefits \| Debt Securities
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Maximum weighted-average maturity, debt securities							10 years
Average benchmark duration for debt securities							5 years
Restricted stock units for non employee directors (RSUs)
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Grants in period			3,000	5,000	5,000
Restricted stock units for non employee directors change of control
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Grants in period		50,000
Grants in period per employee (in shares)		10,000
Fair value of RSU's outstanding		$ 2,279
Forfeited / expired (in shares)									10,000
Unvested RSU's at end of year (in shares)								40,000
Performance shares
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Shares received upon vesting (in shares)							1
Award vesting period							3 years
Compensation cost not yet recognized							$ 2,124
Compensation cost not yet recognized, recognition period							1 year 3 months 18 days
Time-based restricted stock units
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Shares received upon vesting (in shares)							1
Compensation cost not yet recognized							$ 2,565
Compensation cost not yet recognized, recognition period							1 year 9 months 18 days
Restricted stock unit awards
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Grants in period							110,000
Forfeited / expired (in shares)							3,000
Unvested RSU's at end of year (in shares)							199,000	203,000
Weighted average grant date fair value, granted (in dollars per share)							$ 59.30	$ 40.41	$ 44.75
Fair value of awards vested in period							$ 6,719	$ 6,233	$ 7,502
Weighted-average grant date fair value (in dollars per share)							$ 49.32	$ 40.23
Restricted stock unit awards \| Former vice president, general counsel and secretary
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Grants in period	4,254
Weighted-average grant date fair value (in dollars per share)	$ 93.82
Compensation and options expense for arrangement with former vice president, general counsel and secretary	$ 332
Stock option awards
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Award vesting period							3 years
Award expiration period							10 years
Options exercised during the period (in shares)							0
Employee Stock Purchase Plan Awards
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Discount to market under the ESOP							15.00%
Maximum period of restriction on resale under ESOP							1 year
Maximum participation based on compensation percentage under ESOP							10.00%
Stock issued during period under ESOP							13,156	17,874	13,573
Forecast \| Former vice president, general counsel and secretary
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Compensation expense for arrangement with former vice president, general counsel and secretary						$ 374

Stockholders' Equity - Additional Information (Details) - $ / shares	Dec. 30, 2017	Dec. 31, 2016
Preferred Stock [Abstract]
Preferred stock, authorized (in shares)	5,000,000	5,000,000
Preferred stock, par value (in usd per share)	$ 0.01	$ 0.01
Common Stock [Abstract]
Common stock reserved and unissued (in shares)	1,044,954

Income Taxes - Components of Income Before Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 30, 2017	Dec. 31, 2016	Jan. 02, 2016
Income Tax Disclosure [Abstract]
Domestic	$ 2,797	$ 6,196	$ 13,076
Foreign	54,856	38,353	36,295
Total income from continuing operations before provision for income taxes	$ 57,653	$ 44,549	$ 49,371

Income Taxes - Components of Provision for Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 30, 2017	Dec. 31, 2016	Jan. 02, 2016
Current Provision:
Federal	$ 7,835	$ 535	$ 4,693
Foreign	17,372	11,323	10,623
State	285	838	1,152
Current provision	25,492	12,696	16,468
Deferred Provision (Benefit):
Federal	4,682	1,738	45
Foreign	(3,563)	(1,818)	(1,378)
State	(541)	(533)	(373)
Deferred (benefit) provision	578	(613)	(1,706)
Continuing Operations	$ 26,070	$ 12,083	$ 14,762

Income Taxes - Continuing and Discontinued Operations (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 30, 2017	Dec. 31, 2016	Jan. 02, 2016
Income Tax Disclosure [Abstract]
Continuing Operations	$ 26,070	$ 12,083	$ 14,762
Discontinued Operation	0	2	43
Provision for Income Taxes Including Discontinued Operation	$ 26,070	$ 12,085	$ 14,805

Income Taxes - Reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 30, 2017	Dec. 31, 2016	Jan. 02, 2016
Income Tax Disclosure [Abstract]
Provision for Income Taxes at Statutory Rate	$ 20,179	$ 15,592	$ 17,279
Increases (Decreases) Resulting From:
State income taxes, net of federal tax	151	189	506
U.S. tax cost of foreign earnings	761	192	455
Foreign tax rate differential	(3,747)	(3,921)	(3,852)
Provision for (reversal of) tax benefit reserves, net	1,517	(76)	33
Change in valuation allowance	(341)	(131)	99
Nondeductible expenses	1,177	1,090	704
Research and development tax credits	(297)	(229)	(210)
Excess tax benefit related to share-based compensation	(581)	(553)	0
Impact of the U.S. Tax Cuts and Jobs Act	7,093	0	0
Other	158	(70)	(252)
Continuing Operations	$ 26,070	$ 12,083	$ 14,762

Income Taxes - Net Deferred Tax (Liability) Asset (Details) - USD ($) $ in Thousands	Dec. 30, 2017	Dec. 31, 2016
Deferred Tax Asset:
Foreign, state, and alternative minimum tax credit carryforwards	$ 185	$ 161
Reserves and accruals	4,455	4,842
Net operating loss carryforwards	15,161	13,694
Inventory basis difference	3,265	3,005
Research and development	88	75
Employee compensation	2,610	4,966
Allowance for doubtful accounts	505	488
Revenue recognition	0	636
Other	59	249
Deferred tax asset, gross	26,328	28,116
Less: valuation allowance	(10,835)	(10,863)
Deferred tax asset, net	15,493	17,253
Deferred Tax Liability:
Goodwill and intangible assets	(32,120)	(21,853)
Fixed asset basis difference	(4,213)	(4,325)
Provision for unremitted foreign earnings	(2,718)	0
Other	(554)	(1,199)
Deferred tax liability	(39,605)	(27,377)
Net deferred tax liability	$ (24,112)	$ (10,124)

Income Taxes - Unrecognized Tax Benefits (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 30, 2017	Dec. 31, 2016
Reconciliation of Unrecognized Tax Benefits [Roll Forward]
Unrecognized Tax Benefits, Beginning of Year	$ 5,467	$ 5,052
Gross Increases—Tax Positions in Prior Periods	4	403
Gross Decreases—Tax Positions in Prior Periods	(22)	(23)
Gross Increases—Current-period Tax Positions	2,229	480
Lapses of Statutes of Limitations	(11)	(359)
Increase from Currency Translation	176
Decrease from Currency Translation		(86)
Unrecognized Tax Benefits, End of Year	$ 7,843	$ 5,467

Income Taxes - Additional Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 30, 2017	Dec. 31, 2016	Jan. 02, 2016
Income Tax Disclosure [Abstract]
Tax Cuts and Jobs Act of 2017 - provisional net income tax expense	$ 7,487
Tax Cuts and Jobs Act of 2017 - one-time transition tax	10,303
Tax Cuts and Jobs Act of 2017 - tax benefit from remeasurement of deferred tax liabilities	2,816
Tax Cuts and Jobs Act of 2017 - Withholding taxes associated with foreign earnings that will be repatriated	4,599
Tax benefits related to employees' and directors' stock plans			$ 881
Excess tax benefit related to share-based compensation	$ 608	$ 582
Percent of effective income tax rate reconciliation at the federal statutory income tax rate	35.00%
Operating Loss Carryforwards [Line Items]
Deferred tax assets, Valuation allowance	$ 10,835	10,863
Increase (decrease) of deferred tax asset valuation allowance	(28)
Undistributed earnings of foreign subsidiaries	245,640
Provision for unremitted foreign earnings	2,718	0
Estimated withholding liability related to undistributed earnings of foreign subsidiaries	3,740
Unrecognized tax benefits that would impact effective tax rate	7,843
Income tax penalties and accrued interest from unrecognized tax benefits	1,523	1,321
Income tax penalties and interest expense from unrecognized tax benefits	199	$ 69
Upper bound estimated range of change of significant decrease in unrecognized tax benefits	$ 1,585
Estimated time frame for significant change in unrecognized tax benefits	12 months
Internal revenue service (IRS)
Operating Loss Carryforwards [Line Items]
Deferred tax assets, Valuation allowance	$ 506
Foreign tax authority
Operating Loss Carryforwards [Line Items]
Deferred tax assets, Valuation allowance	10,329
Operating loss carryforwards	52,813
State and local jurisdiction
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	$ 32,879

Long-Term Obligations - Long-term Obligations (Details) - USD ($) $ in Thousands	Dec. 30, 2017	Dec. 31, 2016
Debt Instrument [Line Items]
Obligations Under Capital Lease, due 2018 to 2022	$ 4,633	$ 4,309
Total	242,080	66,411
Less: Current Maturities of Long-Term Obligations	(696)	(643)
Long-Term Obligations	241,384	65,768
Revolving credit facility, due 2022
Debt Instrument [Line Items]
Long-term debt	237,011	61,494
Other Borrowings, due 2018 to 2023
Debt Instrument [Line Items]
Other borrowings	$ 436	$ 608

Long-Term Obligations - Additional Information (Details)			12 Months Ended
	Mar. 02, 2017 USD ($)	Apr. 04, 2016 USD ($)	Dec. 30, 2017 USD ($)	Dec. 31, 2016 USD ($)	Jan. 02, 2016 USD ($)	May 24, 2017 USD ($)
Debt Instrument [Line Items]
Payment of debt issuance costs			$ 1,257,000	$ 27,000	$ 0
Unamortized debt issuance costs			1,285,000	266,000
Loans receivable			490,000
Outstanding capital lease obligations			$ 4,633,000	4,309,000
Revolving credit facility
Debt Instrument [Line Items]
Maximum consolidated leverage ratio			3.5
Minimum consolidated interest coverage ratio			3
Long-term debt			$ 237,011,000	$ 61,494,000
Remaining borrowing capacity			$ 64,030,000
Weighted average interest rate for long-term obligations (in hundredths)			2.69%	1.52%
Revolving credit facility \| 2017 Credit Agreement
Debt Instrument [Line Items]
Term of debt agreement	5 years
Borrowing capacity available under committed portion	$ 200,000,000					$ 300,000,000
Additional borrowing capacity	$ 100,000,000
Basis spread on variable rate floor (as a percentage)	0.00%
Percentage of foreign unrestricted cash	65.00%
Maximum amount of unrestricted U.S. cash	$ 30,000,000
Maximum consolidated leverage ratio	3.5
Minimum consolidated interest coverage ratio	3
Proceeds from credit facility			$ 232,019,000
Long-term debt			237,011,000
Payment of debt issuance costs			1,257,000
Revolving credit facility \| Canadian Denominated Borrowing
Debt Instrument [Line Items]
Proceeds from credit facility			70,691,000
Long-term debt			58,319,000
Revolving credit facility \| Euro-Denominated Borrowing
Debt Instrument [Line Items]
Proceeds from credit facility		$ 29,866,000	61,769,000
Long-term debt			58,692,000
Revolving credit facility \| Federal funds rate \| 2017 Credit Agreement
Debt Instrument [Line Items]
Basis spread on variable rate (as a percentage)	0.50%
Revolving credit facility \| LIBOR \| 2017 Credit Agreement
Debt Instrument [Line Items]
Basis spread on variable rate (as a percentage)	0.50%
Revolving credit facility \| LIBOR \| Minimum \| 2017 Credit Agreement
Debt Instrument [Line Items]
Basis spread on variable rate (as a percentage)	1.00%
Revolving credit facility \| LIBOR \| Maximum \| 2017 Credit Agreement
Debt Instrument [Line Items]
Basis spread on variable rate (as a percentage)	2.00%
Capital Lease Obligations \| Sale Leaseback Arrangement
Debt Instrument [Line Items]
Net purchase option		$ 1,594,000
Outstanding capital lease obligations			$ 4,535,000
Capital lease obligations, interest rate			1.79%
Capital Lease Obligations \| Other Capital Lease Obligations
Debt Instrument [Line Items]
Outstanding capital lease obligations			$ 98,000

Long-Term Obligations - Future Minimum Capital Lease Payments (Details) $ in Thousands	Dec. 30, 2017 USD ($)
Debt Disclosure [Abstract]
2018	$ 604
2019	597
2020	605
2021	567
2022	915
Total minimum lease payments	3,288
Less: Imputed Interest	(249)
Present Value of Minimum Lease Payments	$ 3,039

Commitments and Contingencies - Operating Leases (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 30, 2017	Dec. 31, 2016	Jan. 02, 2016
Commitments and Contingencies Disclosure [Abstract]
Expenses from operating leases	$ 4,955	$ 4,298	$ 3,797
2018	3,470
2019	2,251
2020	1,584
2021	1,197
2022	1,105
Due Thereafter	1,994
Future Minimum Payments Due	$ 11,601

Commitments and Contingencies - Letters of Credit and Bank Guarantees (Details) $ in Thousands	Dec. 30, 2017 USD ($)
Performance Obligations and Customer Deposit Guarantees
Line of Credit Facility [Line Items]
Outstanding letters of credit and bank guarantees	$ 21,021

Commitments and Contingencies - Right of Recourse (Details) - USD ($) $ in Thousands	Dec. 30, 2017	Dec. 31, 2016
Commitments and Contingencies Disclosure [Abstract]
Banker's Acceptances Executed	$ 10,035	$ 4,824

Restructuring Costs and Other Income - Changes in Accrued Restructuring (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 30, 2017	Jan. 02, 2016
Restructuring Reserve [Roll Forward]
Provision		$ 515
Restructuring Plan 2015
Restructuring Reserve [Roll Forward]
Provision		344
Restructuring Plan 2014
Restructuring Reserve [Roll Forward]
Provision		171
Severance Costs \| Restructuring Plan 2017
Restructuring Reserve [Roll Forward]
Provision	$ 203
Balance at end of period	$ 203
Severance Costs \| Restructuring Plan 2015
Restructuring Reserve [Roll Forward]
Provision		344
Usage		(323)
Currency translation		(21)
Balance at end of period		0
Severance Costs \| Restructuring Plan 2014
Restructuring Reserve [Roll Forward]
Balance at beginning of period		47
Provision		171
Usage		(214)
Currency translation		(4)
Balance at end of period		$ 0

Restructuring Costs and Other Income - Additional Information (Details) ft² in Thousands, $ in Thousands	12 Months Ended
	Dec. 30, 2017 USD ($) ft² Employee	Dec. 31, 2016 USD ($)	Jan. 02, 2016 USD ($) Employee	Feb. 27, 2018 USD ($)
Restructuring Cost and Reserve [Line Items]
Restructuring provision (reversal)			$ 515
Manufacturing facility square footage (in sqft) \| ft²	160
Gain on the sale of real estate	$ (42)	$ 350	(4)
Proceeds from sale of real estate	$ 130	428	$ 30
United States
Restructuring Cost and Reserve [Line Items]
Number of positions eliminated related to restructuring \| Employee	4
Sweden
Restructuring Cost and Reserve [Line Items]
Number of positions eliminated related to restructuring \| Employee	6
Gain on the sale of real estate		317
Proceeds from sale of real estate		$ 368
Canada And Brazil
Restructuring Cost and Reserve [Line Items]
Number of positions eliminated related to restructuring \| Employee			25
Restructuring Plan 2017 \| Employee severance
Restructuring Cost and Reserve [Line Items]
Restructuring provision (reversal)	$ 203
Restructuring Plan 2015
Restructuring Cost and Reserve [Line Items]
Restructuring provision (reversal)			$ 344
Restructuring Plan 2015 \| Employee severance
Restructuring Cost and Reserve [Line Items]
Restructuring provision (reversal)			344
Restructuring Plan 2014
Restructuring Cost and Reserve [Line Items]
Restructuring provision (reversal)			$ 171
Restructuring Plan 2014 \| Sweden
Restructuring Cost and Reserve [Line Items]
Number of positions eliminated related to restructuring \| Employee			4
Restructuring Plan 2014 \| Employee severance
Restructuring Cost and Reserve [Line Items]
Restructuring provision (reversal)			$ 171
Subsequent event \| Restructuring Plan 2017 \| Facility-related closing costs
Restructuring Cost and Reserve [Line Items]
Expected remaining costs				$ 1,708

Derivatives - Fair Value (Details) - USD ($) $ in Thousands	Dec. 30, 2017	Dec. 31, 2016
Derivatives Designated as Hedging Instruments \| Interest rate swap agreements \| Other Long-Term Assets
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset	$ 126	$ 62
Derivative Asset, Notional Amount	10,000	10,000
Derivatives Designated as Hedging Instruments \| Forward Currency-Exchange Contracts \| Other Current Liabilities
Derivatives, Fair Value [Line Items]
Derivative Liability, Fair Value, Gross Liability	0	(41)
Derivative Liability, Notional Amount	0	2,380
Derivatives Not Designated as Hedging Instruments \| Forward Currency-Exchange Contracts \| Other Current Liabilities
Derivatives, Fair Value [Line Items]
Derivative Liability, Fair Value, Gross Liability	(16)	(237)
Derivative Liability, Notional Amount	2,049	17,185
Derivatives Not Designated as Hedging Instruments \| Forward Currency-Exchange Contracts \| Other Current Assets
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset	17	2
Derivative Asset, Notional Amount	$ 1,244	$ 227

Derivatives - AOCI Activity (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 30, 2017	Dec. 31, 2016	Jan. 02, 2016
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	$ 284,279	$ 267,945	$ 265,459
Gain (loss) recognized in AOCI	67	241	563
Ending balance	332,504	284,279	$ 267,945
Derivatives Designated as Hedging Instruments \| Cash Flow Hedging
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	12
Loss reclassified to earnings	84
Gain (loss) recognized in AOCI	(17)
Ending balance	79	12
Derivatives Designated as Hedging Instruments \| Cash Flow Hedging \| Interest rate swap agreements
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	40
Loss reclassified to earnings	20
Gain (loss) recognized in AOCI	19
Ending balance	79	40
Derivatives Designated as Hedging Instruments \| Cash Flow Hedging \| Forward Currency-Exchange Contracts
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	(28)
Loss reclassified to earnings	64
Gain (loss) recognized in AOCI	(36)
Ending balance	$ 0	$ (28)

Derivatives - Additional Information (Details)	12 Months Ended
Derivatives - Additional Information (Details)	Dec. 30, 2017 USD ($)	Dec. 31, 2016 USD ($)	Jan. 02, 2016 USD ($)	Jan. 16, 2015 USD ($)
Derivatives, Fair Value [Line Items]
Amounts to be reclassified into earnings	$ 28,000
Revolving credit facility
Derivatives, Fair Value [Line Items]
Maximum consolidated leverage ratio	3.5
Minimum consolidated interest coverage ratio	3
Forward Currency-Exchange Contracts \| Derivatives Not Designated as Hedging Instruments
Derivatives, Fair Value [Line Items]
Loss on foreign currency derivative instruments, not designated as hedging	$ 1,367,000	$ 797,000	$ 386,000
Cash Flow Hedging \| Derivatives Designated as Hedging Instruments
Derivatives, Fair Value [Line Items]
Rate of effectiveness of derivative agreement	100.00%
Cash Flow Hedging \| Swap Agreement 2015 \| Derivatives Designated as Hedging Instruments
Derivatives, Fair Value [Line Items]
Notional amount				$ 10,000,000
Cash Flow Hedging \| Swap Agreement 2015 \| Derivatives Designated as Hedging Instruments \| LIBOR
Derivatives, Fair Value [Line Items]
Derivative, fixed interest rate				1.50%
Cash Flow Hedging \| Interest rate swap agreements \| Derivatives Designated as Hedging Instruments
Derivatives, Fair Value [Line Items]
Unrealized gain associated with swap agreements	$ 126,000
Cash Flow Hedging \| Forward Currency-Exchange Contracts \| Derivatives Designated as Hedging Instruments
Derivatives, Fair Value [Line Items]
Period over which entity manages its level of exposure of risk	12 months

Fair Value Measurements and Fair Value of Financial Instruments - Assets and Liabilities, Recurring Basis (Details) - Recurring - USD ($) $ in Thousands	Dec. 30, 2017	Dec. 31, 2016
Assets:
Money market funds and time deposits	$ 17,728	$ 10,855
Forward currency-exchange contracts	17	2
Interest rate swap agreement	126	62
Banker's acceptance drafts	15,960	7,852
Liabilities:
Forward currency-exchange contracts	16	278
Level 1
Assets:
Money market funds and time deposits	17,728	10,855
Forward currency-exchange contracts	0	0
Interest rate swap agreement	0	0
Banker's acceptance drafts	0	0
Liabilities:
Forward currency-exchange contracts	0	0
Level 2
Assets:
Money market funds and time deposits	0	0
Forward currency-exchange contracts	17	2
Interest rate swap agreement	126	62
Banker's acceptance drafts	15,960	7,852
Liabilities:
Forward currency-exchange contracts	16	278
Level 3
Assets:
Money market funds and time deposits	0	0
Forward currency-exchange contracts	0	0
Interest rate swap agreement	0	0
Banker's acceptance drafts	0	0
Liabilities:
Forward currency-exchange contracts	$ 0	$ 0

Fair Value Measurements and Fair Value of Financial Instruments - Debt Obligations (Details) - USD ($) $ in Thousands	Dec. 30, 2017	Dec. 31, 2016
Carrying Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Revolving credit facility	$ 237,011	$ 61,494
Capital lease obligations	4,101	3,857
Other borrowings	272	417
Debt obligations	241,384	65,768
Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Revolving credit facility	237,011	61,494
Capital lease obligations	4,101	3,857
Other borrowings	272	417
Debt obligations	$ 241,384	$ 65,768

Business Segment and Geographical Information - Additional Information (Details) $ in Thousands	12 Months Ended
	Dec. 30, 2017 USD ($) Segment	Dec. 31, 2016 USD ($)	Jan. 02, 2016 USD ($)
Segment Reporting [Abstract]
Number of reportable segments \| Segment	2
Segment Reporting Information [Line Items]
Acquisition transaction costs	$ 5,375	$ 1,832
Restructuring and other expense (income)	203	(317)	$ 515
Operating Segments \| Papermaking systems segment
Segment Reporting Information [Line Items]
Acquisition transaction costs	787	3,491
Restructuring and other expense (income)	203	$ 317	$ 515
Operating Segments \| Wood Processing Systems
Segment Reporting Information [Line Items]
Acquisition transaction costs	$ 11,163

Business Segment and Geographical Information - Revenues and Assets (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 30, 2017	Sep. 30, 2017	Jul. 01, 2017	Apr. 01, 2017	Dec. 31, 2016	Oct. 01, 2016	Jul. 02, 2016	Apr. 02, 2016	Dec. 30, 2017	Dec. 31, 2016	Jan. 02, 2016
Revenues by Product Line:
Revenues	$ 149,140	$ 152,794	$ 110,242	$ 102,857	$ 100,241	$ 105,519	$ 111,828	$ 96,538	$ 515,033	$ 414,126	$ 390,107
Income from Continuing Operations Before Provision for Income Taxes:
Total operating income (loss)									60,753	45,573	50,119
Interest expense, net (d)									(3,100)	(1,024)	(748)
Income from Continuing Operations Before Provision for Income Taxes									57,653	44,549	49,371
Total Assets:
Total Assets	761,094				470,691				761,094	470,691	415,498
Depreciation and Amortization:
Depreciation and amortization									19,375	14,326	10,821
Capital Expenditures:
Capital expenditures									17,281	5,804	5,479
Long-lived assets	79,723				47,704				79,723	47,704	42,293
United States
Revenues by Product Line:
Revenues									182,788	165,335	193,383
Capital Expenditures:
Long-lived assets	32,852				18,482				32,852	18,482	17,373
China
Revenues by Product Line:
Revenues									63,910	43,299	50,814
Capital Expenditures:
Long-lived assets	11,685				10,714				11,685	10,714	12,278
Canada
Revenues by Product Line:
Revenues									47,611	28,888	21,164
Capital Expenditures:
Long-lived assets	9,449				1,125				9,449	1,125	1,312
Germany
Revenues by Product Line:
Revenues									32,026	18,095	9,686
Capital Expenditures:
Long-lived assets	6,452				5,792				6,452	5,792	63
Other
Revenues by Product Line:
Revenues									188,698	158,509	115,060
Capital Expenditures:
Long-lived assets	19,285				11,591				19,285	11,591	11,267
Operating Segments \| Papermaking Systems Segment
Revenues by Product Line:
Revenues									407,605	366,461	342,661
Income from Continuing Operations Before Provision for Income Taxes:
Total operating income (loss)									72,600	57,427	56,789
Total Assets:
Total Assets	494,919				407,538				494,919	407,538	354,417
Depreciation and Amortization:
Depreciation and amortization									11,239	11,513	7,898
Capital Expenditures:
Capital expenditures									14,359	5,504	4,639
Operating Segments \| Papermaking Systems Segment \| Stock-Preparation
Revenues by Product Line:
Revenues									193,838	171,378	148,341
Operating Segments \| Papermaking Systems Segment \| Doctoring, Cleaning, & Filtration
Revenues by Product Line:
Revenues									109,631	105,938	101,523
Operating Segments \| Papermaking Systems Segment \| Fluid-Handling
Revenues by Product Line:
Revenues									104,136	89,145	92,797
Operating Segments \| Wood Processing Systems
Revenues by Product Line:
Revenues									95,053	36,850	36,387
Income from Continuing Operations Before Provision for Income Taxes:
Total operating income (loss)									9,690	8,327	10,926
Total Assets:
Total Assets	257,467				52,407				257,467	52,407	53,347
Depreciation and Amortization:
Depreciation and amortization									7,515	2,188	2,384
Capital Expenditures:
Capital expenditures									2,333	29	198
Corporate and Fiber-based Products
Income from Continuing Operations Before Provision for Income Taxes:
Total operating income (loss)									(21,537)	(20,181)	(17,596)
Total Assets:
Total Assets	$ 8,708				$ 10,746				8,708	10,746	7,734
Depreciation and Amortization:
Depreciation and amortization									621	625	539
Capital Expenditures:
Capital expenditures									589	271	642
Corporate and Fiber-based Products \| Fiber-based Products
Revenues by Product Line:
Revenues									$ 12,375	$ 10,815	$ 11,059

Earnings per Share - Computation (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 30, 2017	Sep. 30, 2017	Jul. 01, 2017	Apr. 01, 2017	Dec. 31, 2016	Oct. 01, 2016	Jul. 02, 2016	Apr. 02, 2016	Dec. 30, 2017	Dec. 31, 2016	Jan. 02, 2016
Earnings Per Share [Abstract]
Income from Continuing Operations					$ 7,733	$ 9,154	$ 8,311	$ 6,876	$ 31,092	$ 32,074	$ 34,315
Income from Discontinued Operation					0	3	0	0	0	3	74
Net Income Attributable to Kadant	$ 760	$ 13,285	$ 8,096	$ 8,951	$ 7,733	$ 9,157	$ 8,311	$ 6,876	$ 31,092	$ 32,077	$ 34,389
Basic Weighted Average Shares									10,991	10,869	10,867
Effect of Stock Options, Restricted Stock Units and Employee Stock Purchase Plan									321	280	227
Diluted Weighted Average Shares									11,312	11,149	11,094
Basic EPS:
Continuing Operations (in dollars per share)					$ 0.71	$ 0.84	$ 0.76	$ 0.64	$ 2.83	$ 2.95	$ 3.16
Discontinued Operation (in dollars per share)									0.00	0.00	0.01
Net Income per Basic Share (in dollars per share)	$ 0.07	$ 1.21	$ 0.74	$ 0.82	0.71	0.84	0.76	0.64	2.83	2.95	3.16
Diluted EPS:
Continuing Operations (in dollars per share)					0.69	0.82	0.75	0.62	2.75	2.88	3.09
Discontinued Operation (in dollars per share)									0.00	0.00	0.01
Net Income per Diluted Share (in dollars per share)	$ 0.07	$ 1.17	$ 0.72	$ 0.80	$ 0.69	$ 0.82	$ 0.75	$ 0.62	$ 2.75	$ 2.88	$ 3.10

Earnings per Share - Additional Information (Details) - shares	12 Months Ended
	Dec. 30, 2017	Dec. 31, 2016	Jan. 02, 2016
Restricted stock unit awards
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Amount of antidilutive securities excluded from computation of EPS	15,600	36,700	23,100

Accumulated Other Comprehensive Items - Components of AOCI on the Balance Sheet (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 30, 2017	Dec. 31, 2016	Jan. 02, 2016
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	$ 284,279	$ 267,945	$ 265,459
Ending balance	332,504	284,279	267,945
Foreign Currency Translation Adjustment
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	(41,094)
Other comprehensive income (loss) before reclassifications	23,593
Reclassifications from AOCI	0
Net current period other comprehensive income (loss)	23,593
Ending balance	(17,501)	(41,094)
Unrecognized Prior Service Cost
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	(397)
Other comprehensive income (loss) before reclassifications	(17)
Reclassifications from AOCI	95
Net current period other comprehensive income (loss)	78
Ending balance	(319)	(397)
Deferred Loss on Pension and Other Post-Retirement Benefit Plans
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	(8,158)
Other comprehensive income (loss) before reclassifications	(1,185)
Reclassifications from AOCI	369
Net current period other comprehensive income (loss)	(816)
Ending balance	(8,974)	(8,158)
Deferred Gain (Loss) on Hedging Instruments
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	12
Other comprehensive income (loss) before reclassifications	(17)
Reclassifications from AOCI	84
Net current period other comprehensive income (loss)	67
Ending balance	79	12
Accumulated Other Comprehensive Items
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	(49,637)	(36,972)	(17,146)
Other comprehensive income (loss) before reclassifications	22,374
Reclassifications from AOCI	548
Net current period other comprehensive income (loss)	22,922
Ending balance	$ (26,715)	$ (49,637)	$ (36,972)

Accumulated Other Comprehensive Items - Reclassification Out of AOCI (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 30, 2017	Dec. 31, 2016	Jan. 02, 2016
Reclassification Adjustment Out Of Accumulated Other Comprehensive Items [Line Items]
Interest expense	$ (3,547)	$ (1,293)	$ (948)
Cost of revenues	(283,999)	(225,737)	(209,982)
SG&A expenses	(160,515)	(135,753)	(122,814)
Amortization of prior service costs
Reclassification Adjustment Out Of Accumulated Other Comprehensive Items [Line Items]
Total Reclassifications	(95)
Amortization of actuarial losses
Reclassification Adjustment Out Of Accumulated Other Comprehensive Items [Line Items]
Total Reclassifications	(369)
Cash Flow Hedges
Reclassification Adjustment Out Of Accumulated Other Comprehensive Items [Line Items]
Total Reclassifications	(84)
Reclassification out of Accumulated Other Comprehensive Income
Reclassification Adjustment Out Of Accumulated Other Comprehensive Items [Line Items]
Total Reclassifications	(548)	(964)	635
Reclassification out of Accumulated Other Comprehensive Income \| Amortization of prior service costs
Reclassification Adjustment Out Of Accumulated Other Comprehensive Items [Line Items]
SG&A expenses	(147)	(147)	(147)
Reclassification out of Accumulated Other Comprehensive Income \| Amortization of actuarial losses
Reclassification Adjustment Out Of Accumulated Other Comprehensive Items [Line Items]
SG&A expenses	(563)	(701)	(576)
Reclassification out of Accumulated Other Comprehensive Income \| Pension and Other Post-retirement Plans
Reclassification Adjustment Out Of Accumulated Other Comprehensive Items [Line Items]
Total (expense) income before income taxes	(710)	(848)	(723)
Income tax benefit (provision)	246	295	249
Total Reclassifications	(464)	(553)	(474)
Reclassification out of Accumulated Other Comprehensive Income \| Cash Flow Hedges
Reclassification Adjustment Out Of Accumulated Other Comprehensive Items [Line Items]
Total (expense) income before income taxes	(127)	(374)	1,259
Income tax benefit (provision)	43	(37)	(150)
Total Reclassifications	(84)	(411)	1,109
Reclassification out of Accumulated Other Comprehensive Income \| Cash Flow Hedges \| Interest Rate Swap
Reclassification Adjustment Out Of Accumulated Other Comprehensive Items [Line Items]
Interest expense	(30)	(174)	(420)
Reclassification out of Accumulated Other Comprehensive Income \| Cash Flow Hedges \| Forward Currency-Exchange Contracts
Reclassification Adjustment Out Of Accumulated Other Comprehensive Items [Line Items]
Revenues	0	(14)	(12)
Cost of revenues	(97)	(186)	0
SG&A expenses	$ 0	$ 0	$ 1,691

Unaudited Quarterly Information - Summary of Quarterly Information (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 30, 2017	Sep. 30, 2017	Jul. 01, 2017	Apr. 01, 2017	Dec. 31, 2016	Oct. 01, 2016	Jul. 02, 2016	Apr. 02, 2016	Dec. 30, 2017	Dec. 31, 2016	Jan. 02, 2016
Quarterly Financial Information Disclosure [Abstract]
Revenues	$ 149,140	$ 152,794	$ 110,242	$ 102,857	$ 100,241	$ 105,519	$ 111,828	$ 96,538	$ 515,033	$ 414,126	$ 390,107
Gross Profit	64,590	64,628	52,824	48,992	46,073	48,079	50,261	43,976
Amounts Attributable to Kadant:
Income from Continuing Operations					7,733	9,154	8,311	6,876	31,092	32,074	34,315
Income from Discontinued Operation					0	3	0	0	0	3	74
Net Income Attributable to Kadant	$ 760	$ 13,285	$ 8,096	$ 8,951	$ 7,733	$ 9,157	$ 8,311	$ 6,876	$ 31,092	$ 32,077	$ 34,389
Basic Earnings per Share:
Continuing Operations (in dollars per share)					$ 0.71	$ 0.84	$ 0.76	$ 0.64	$ 2.83	$ 2.95	$ 3.16
Net Income Attributable to Kadant (in dollars per share)	$ 0.07	$ 1.21	$ 0.74	$ 0.82	0.71	0.84	0.76	0.64	2.83	2.95	3.16
Earnings Per Share, Diluted [Abstract]
Continuing Operations (in dollars per share)					0.69	0.82	0.75	0.62	2.75	2.88	3.09
Net Income Attributable to Kadant (in dollars per share)	0.07	1.17	0.72	0.80	0.69	0.82	0.75	0.62	2.75	2.88	3.10
Cash Dividends Declared per Common Share (in dollars per share)	$ 0.21	$ 0.21	$ 0.21	$ 0.21	$ 0.19	$ 0.19	$ 0.19	$ 0.19	$ 0.84	$ 0.76	$ 0.68