Kaman (KAMN) 10-Q 4 May 21 2021 Q1 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	3 Months Ended
	Apr. 02, 2021	Apr. 30, 2021
Document and Entity Information [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Apr. 2, 2021
Document Transition Report	false
Entity File Number	001-35419
Entity Registrant Name	KAMAN CORPORATION
Entity Incorporation, State or Country Code	CT
Entity Tax Identification Number	06-0613548
Entity Address, Address Line One	1332 Blue Hills Avenue,
Entity Address, City or Town	Bloomfield,
Entity Address, State or Province	CT
Entity Address, Postal Zip Code	06002
City Area Code	(860)
Local Phone Number	243-7100
Title of 12(b) Security	Common Stock ($1 par value)
Trading Symbol	KAMN
Security Exchange Name	NYSE
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		27,810,056
Entity Central Index Key	0000054381
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	Q1
Amendment Flag	false

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Apr. 02, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 120,724	$ 104,377
Restricted Cash, Current	0	25,121
Accounts receivable, net	102,328	153,806
Contract assets	114,601	108,645
Contract costs, current portion	5,050	3,511
Inventories	197,303	185,072
Income tax refunds receivable	4,851	5,269
Other current assets	12,628	12,173
Total current assets	557,485	597,974
Property, plant and equipment, net of accumulated depreciation of $233,534 and $228,984, respectively	207,145	210,852
Operating Lease, Right-of-Use Asset	12,048	12,880
Goodwill	243,688	247,244
Other intangible assets, net	146,626	150,198
Deferred income taxes	37,540	39,809
Contract costs, noncurrent portion	7,205	8,311
Other assets	39,000	39,125
Total assets	1,250,737	1,306,393
Current liabilities:
Accounts payable – trade	45,887	60,200
Accrued salaries and wages	40,306	70,552
Contract liabilities, current portion	32,622	39,073
Operating Lease, Liability, Current	4,057	4,305
Income taxes payable	1,203	19
Other current liabilities	35,722	36,177
Total current liabilities	159,797	228,412
Long-term debt, excluding current portion, net of debt issuance costs	186,378	185,401
Deferred income taxes	7,205	7,381
Underfunded pension	63,185	69,610
Contract liabilities, noncurrent portion	12,120	11,019
Operating Lease, Liability, Noncurrent	8,632	9,325
Other Liabilities, Noncurrent	46,201	47,636
Commitments and contingencies (Note 14)
Shareholders' equity:
Preferred stock, $1 par value, 200,000 shares authorized; none outstanding	0	0
Common stock, $1 par value, 50,000,000 shares authorized; voting; 30,370,157 and 30,278,668 shares issued, respectively	30,370	30,279
Additional paid-in capital	241,444	238,829
Retained earnings	730,913	728,764
Accumulated other comprehensive income (loss)	(114,466)	(130,821)
Less 2,564,358 and 2,555,785 shares of common stock, respectively, held in treasury, at cost	(121,042)	(120,613)
Total shareholders’ equity	767,219	746,438
Total liabilities and shareholders’ equity	$ 1,250,737	$ 1,306,393

Condensed Consolidated Statemen

Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Apr. 02, 2021	Apr. 03, 2020
Income Statement [Abstract]
Net sales	$ 171,616	$ 207,322
Cost of sales	118,711	139,620
Gross profit	52,905	67,702
Selling, general and administrative expenses	44,991	60,989
Costs of Transaction Services Agreement	705	4,140
Cost of Acquired Retention Plans	0	5,703
Restructuring and severance costs	1,352	1,795
Gain (Loss) on Disposition of Business	234	(493)
Net loss (gain) on sale of assets	10	(10)
Operating income (loss)	5,613	(4,422)
Interest expense, net	4,251	3,247
Non-service pension and post retirement benefit income	(6,643)	(4,063)
Income from Transaction Services Agreement	(475)	(2,974)
Other expense, net	289	218
Earnings (loss) from continuing operations before income taxes	8,191	(850)
Income tax expense (benefit)	207	(443)
Earnings from continuing operations	7,984	(407)
Discontinued Operation, Income (Loss) from Discontinued Operation During Phase-out Period, Net of Tax	0	0
Discontinued Operation, Gain (Loss) on Disposal of Discontinued Operation, Net of Tax	0	692
Earnings from discontinued operations, net of tax	0	692
Net earnings	$ 7,984	$ 285
Earnings per share:
Basic earnings per share from continuing operations	$ 0.29	$ (0.01)
Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Basic Share	0	0.02
Basic earnings per share (in usd per share)	0.29	0.01
Diluted earnings per share from continuing operations	0.29	(0.01)
Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Diluted Share	0	0.02
Diluted earnings per share (in usd per share)	$ 0.29	$ 0.01
Average shares outstanding:
Basic (in shares)	27,815	27,809
Diluted (in shares)	27,867	27,891

Condensed Consolidated Statem_2

Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Apr. 02, 2021	Apr. 03, 2020
Statement of Comprehensive Income [Abstract]
Net earnings	$ 7,984	$ 285
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustments and other	15,513	(10,826)
Change in pension and post-retirement benefit plan liabilities, net of tax expense of $250 and $330, respectively	842	1,107
Other comprehensive income (loss)	16,355	(9,719)
Comprehensive income (loss)	$ 24,339	$ (9,434)

Condensed Consolidated Statem_3

Condensed Consolidated Statement of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Apr. 02, 2021	Apr. 03, 2020	Dec. 31, 2020	Dec. 31, 2018
Statement of Cash Flows [Abstract]
Net earnings	$ 7,984	$ 285
Earnings from discontinued operations, net of tax	0	692
Earnings from continuing operations	7,984	(407)
Adjustments to reconcile net earnings from continuing operations to net cash (used in) provided by operating activities of continuing operations:
Depreciation and amortization	9,209	9,509
Amortization of debt issuance costs	424	492
Accretion of convertible notes discount	738	702
Provision for doubtful accounts	173	179
Goodwill, Impairment Loss	0
Gain (Loss) on Disposition of Business	234	(493)
Net loss (gain) on sale of assets	10	(10)
Net loss on derivative instruments	590	983
Stock compensation expense	1,743	1,633
Deferred income taxes	1,793	3,493
Changes in assets and liabilities, excluding effects of acquisitions/divestitures:
Accounts receivable	50,254	(6,531)
Increase (Decrease) in Contract with Customer, Asset	(5,704)	(11,665)
Contract costs	(432)	(709)
Inventories	(13,655)	(25,206)
Income tax refunds receivable	418	(2,078)
Operating Right-of-Use Assets	799	1,223
Other assets	1,042	(917)
Accounts payable - trade	(14,707)	(6,405)
Contract liabilities	(5,439)	1,743
Operating Lease Liabilities	(908)	(1,183)
Payments for Retention Plans	(25,108)	0
Other current liabilities	(6,796)	(8,079)
Income taxes payable	1,173	(1,038)
Pension liabilities	(5,452)	(12,887)
Increase (Decrease) in Other Noncurrent Liabilities	(798)	2,209
Net Cash Provided by Operating Activities of Continuing Operations	(2,415)	(55,442)
Net Cash (Used in) Provided by Operating Activities of Discontinued Operations	0	0
Net cash provided by operating activities	(2,415)	(55,442)
Cash flows from investing activities:
Proceeds from sale of assets	54	11
Proceeds from Divestiture of Businesses	0	5,223
Payments for (Proceeds from) Businesses and Interest in Affiliates	(3,428)
Proceeds from Sales of Business, Affiliate and Productive Assets		493
Expenditures for property, plant & equipment	(4,678)	(5,559)
Payments to Acquire Businesses, Net of Cash Acquired	0	(304,342)
Other, net	(48)	394
Net Cash Used in Investing Activities of Continuing Operations	(8,100)	(303,780)
Net Cash Used in Investing Activities of Discontinued Operations	0	0
Net cash used in investing activities	(8,100)	(303,780)
Cash flows from financing activities:
Net borrowings under revolving credit agreements	0	201,100
Net change in bank overdraft	797	371
Proceeds from exercise of employee stock awards	880	1,455
Purchase of treasury shares	(344)	(14,072)
Dividends paid	(5,545)	(5,595)
Other, net	(472)	(381)
Net Cash Provided by Financing Activities of Continuing Operations	(4,684)	182,878
Net Cash (Used in) Provided by Financing Activities of Discontinued Operations	0	0
Net cash provided by (used in) financing activities	(4,684)	182,878
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Excluding Exchange Rate Effect	(15,199)	(176,344)
Effect of exchange rate changes on cash and cash equivalents	(166)	262
Cash and cash equivalents at beginning of period				$ 471,540
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	120,724		$ 136,089
Cash and cash equivalents and restricted cash at end of period	$ 120,724	$ 295,458	$ 104,377

Condensed Consolidated Balanc_2

Condensed Consolidated Balance Sheets (Unaudited) (Parentheticals)) - USD ($) $ in Thousands	Apr. 02, 2021	Dec. 31, 2020
Statement of Financial Position [Abstract]
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment	$ 233,534	$ 228,984
Stockholders' Equity, Number of Shares, Par Value and Other Disclosures [Abstract]
Preferred stock, par value (in usd per share)	$ 1	$ 1
Preferred stock, shares authorized (in shares)	200,000	200,000
Preferred Stock, Shares Outstanding	0	0
Common stock, par value (in usd per share)	$ 1	$ 1
Common stock, shares authorized (in shares)	50,000,000	50,000,000
Common stock, shares issued (in shares)	30,370,157	30,278,668
Common stock held in treasury, at cost (in shares)	2,564,358	2,555,785
Disposal Group, Including Discontinued Operation, Liabilities, Current	$ 0	$ 18,086
Disposal Group, Including Discontinued Operation, Liabilities, Noncurrent	$ 0	$ 1,171

Condensed Consolidated Statem_4

Condensed Consolidated Statements of Comprehensive Income (Unaudited) (Parentheticals) - USD ($) $ in Thousands	3 Months Ended
	Apr. 02, 2021	Apr. 03, 2020
Statement of Comprehensive Income [Abstract]
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss) Arising During Period, Tax	$ 250	$ 330

Basis of Presentation

Basis of Presentation	3 Months Ended
	Apr. 02, 2021
Accounting Policies [Abstract]
Basis of Presentation	BASIS OF PRESENTATION During the third quarter of 2019, Kaman Corporation ("the Company") completed the sale of its Distribution business for total cash consideration of approximately $700.0 million, excluding certain working capital adjustments which were finalized in the first quarter of 2020 and transaction costs. The finalization of the gain on the sale of the Distribution business was recorded to gain on disposal of discontinued operations, net of tax on the Company's Condensed Consolidated Statements of Operations in the three-month fiscal period ended April 3, 2020. See Note 3, Disposals , to the Condensed Consolidated Financial Statements for further information. During the fourth quarter of 2020, the Company committed to a plan and received approval from its Board of Directors to sell its United Kingdom ("UK") Composites division. As a result of the approved plan, the UK Composites division met the criteria set forth in ASC 205-20 for held for sale. At December 31, 2020, the assets of the UK Composites business were considered impaired as the estimated fair value of the disposal group was lower than the estimated carrying value of the UK Composites business. As a result, the assets of the UK Composites business were written off and the remaining loss related to the anticipated sale of the disposal group was accrued for in liabilities held for sale, current portion on the Company's Consolidated Balance Sheets. The related liabilities of the UK division to be sold were reclassified to liabilities held for sale, respectively, as of December 31, 2020 on the Company's Consolidated Balance Sheets. On February 2, 2021, the Company sold its UK Composites business. See Note 3, Discontinued Operations and Liabilities Held for Sale , in the Company’s Annual Report on Form 10-K for the year ended December 31, 2020 ("2020 Form 10-K") for additional information. In the opinion of management, the condensed consolidated financial information reflects all adjustments necessary for a fair statement of the Company's financial position, results of operations and cash flows for the interim periods presented, but do not include all disclosures required by accounting principles generally accepted in the United States of America ("GAAP"). All such adjustments are of a normal recurring nature, unless otherwise disclosed in this report. Certain amounts in prior year financial statements and notes thereto have been reclassified to conform to current year presentation. The statements should be read in conjunction with the consolidated financial statements and notes included in the Company’s 2020 Form 10-K. The Company has a calendar year-end; however, its first three fiscal quarters follow a 13-week convention, with each quarter ending on a Friday. The first quarters for 2021 and 2020 ended on April 2, 2021, and April 3, 2020, respectively.

Recent Accounting Standards Rec

Recent Accounting Standards Recent Accounting Standards (Notes)	3 Months Ended
	Apr. 02, 2021
Recent Accounting Standards [Abstract]
Recent Accounting Standards	RECENT ACCOUNTING STANDARDS Recent Accounting Standards Adopted In December 2019, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") 2019-12, "Income Taxes (Topic 740) - Simplifying the Accounting for Income Taxes". The objective of the standard is to simplify the accounting for income taxes by removing certain exceptions and to improve consistent application of Topic 740 by clarifying and amending existing guidance. The standard update is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2020. Early adoption of the standard is permitted, including adoption in any interim period for which financial statements have not yet been issued. If early adopted in an interim period, the adjustments should be reflected as of the beginning of the annual period that includes that interim period. All amendments under the standard must be adopted in the same period. In 2021, the Company adopted ASU 2019-12 using the modified retrospective basis which resulted in a cumulative effect reduction to retained earnings of $0.3 million. In August 2020, the FASB issued ASU 2020-06, "Debt - Debt with Conversion and Other Options (Subtopic 470-20) and Derivatives and Hedging - Contracts in Entity’s Own Equity (Subtopic 815-40): Accounting for Convertible Instruments and Contracts in an Entity’s Own Equity". The objective of this standard update is to simplify the accounting for certain financial instruments with characteristics of liabilities and equity. The update removes certain separation models between a debt component and equity or derivative component for certain convertible instruments, adds new disclosure requirements for convertible instruments to improve the decision usefulness and relevance of the information being provided to users of financial statements, clarifies the guidance for determining whether a contract qualifies for a scope exception from derivative accounting, and amends EPS guidance to improve consistency. The standard update is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2021. Early adoption of the standard is permitted, but no earlier than fiscal years beginning after December 15, 2020, including interim periods within those fiscal years. An entity should adopt the guidance as of the beginning of its annual fiscal year and can do so using a modified retrospective method or fully retrospective method of transition. The Company is currently assessing the potential impact this standard update could have on its consolidated financial statements. 2. RECENT ACCOUNTING STANDARDS (CONTINUED) Recent Accounting Standards Yet to be Adopted In March 2020, the FASB issued ASU 2020-04, "Reference Rate Reform (Topic 848) - Facilitation of the Effects of Reference Rate Reform on Financial Reporting". The objective of the standard is to address operational challenges likely to arise in accounting for contract modifications and hedge accounting due to reference rate reform. The amendments in this ASU provide optional expedients and exceptions for applying GAAP to contracts, hedging relationships and other transactions that reference LIBOR or another reference rate expected to be discontinued because of reference rate reform. The standard update is effective for all entities as of March 12, 2020 through December 31, 2022. An entity may elect to apply the amendments for contract modifications by topic or industry subtopic as of any date from the beginning of an interim period that includes or is subsequent to March 12, 2020, or prospectively from a date within an interim period that includes or is subsequent to March 12, 2020. Once elected for a topic or industry subtopic, the amendments in this standard update must be applied prospectively for all eligible contract modifications for that topic or industry subtopic. An entity may elect to apply the amendments for eligible hedging relationships existing as of the beginning of the interim period that includes March 12, 2020 and to new eligible hedging relationships entered into after the beginning of the interim period that includes March 12, 2020. If an entity elects to apply any of the amendments for an eligible hedging relationship existing as of the beginning of the interim period that includes March 12, 2020, any adjustments as a result of those elections must be reflected as of the beginning of that interim period. If an entity elects to apply any of the amendments for a new hedging relationship entered into between the beginning of the interim period that includes March 12, 2020 and March 12, 2020, any adjustments as a result of those elections must be reflected as of the beginning of the hedging relationship. The impact of the adoption of this standard update is dependent on the Company's contracts modifications as a result of reference rate reform; however, the Company does not expect the adoption of the amendments associated with hedging relationships to have a material impact on the Company's consolidated financial statements. Subsequent to the issuance of ASU 2020-04, the FASB issued the following update: ASU 2021-01, "Reference Rate Reform (Topic 848) - Scope". The amendments in this update affect the guidance within ASU 2020-04 and are being assessed with ASU 2020-04.

Disposals

Disposals	3 Months Ended
	Apr. 02, 2021
Discontinued Operations [Abstract]
Disposal Groups, Including Discontinued Operations, Disclosure [Text Block]	. DISPOSALS UK Composites Business In the fourth quarter of 2020, the Company received approval from its Board of Directors to sell its UK Composites division. The Company sold its UK Composites division in a transaction that closed on February 2, 2021. The sale of the UK Composites business did not meet the criteria set forth in Accounting Standards Codification ("ASC") 205-20 , Presentation of Financial Statements - Discontinued Operations , for discontinued operations as it does not reflect a significant shift in the Company's strategy. As a result of the approved plan, the UK Composites division met the criteria set forth in ASC 205-20 for held for sale presentation at December 31, 2020. At December 31, 2020, the assets of the UK Composites business were considered impaired as the estimated fair value of the disposal group was lower than the estimated carrying value of the UK Composites business. As such, the assets of the UK Composites business were written off and the related liabilities of the UK division to be sold were reclassified to liabilities held for sale, as of December 31, 2020 on the Company's Consolidated Balance Sheets. The following table provides information on the loss recorded on the sale of the UK Composites business. These amounts reflect the balance sheet of the UK Composites business as of February 2, 2021. In thousands Proceeds received from the sale of the UK Composites business $ 3,600 Assets, including cash on hand 23,460 Liabilities 6,618 Net book value of business 16,842 UK cumulative foreign currency translation adjustment balance 22,835 Transaction costs 442 Loss on the sale of the UK Composites business $ 36,519 3. DISPOSALS (CONTINUED) UK Composites Business - continued Of this amount, a loss of $36.3 million was recorded in the year ended December 31, 2020 and a loss of $0.2 million was recorded in the three-month fiscal period ended April 2, 2021. Cash and cash equivalents and restricted cash at the beginning of the period on the Company's Condensed Consolidated Statement of Cash Flows for the three-month fiscal period April 2, 2021 includes $6.6 million of cash that was included in the UK Composites business disposal group. Given the assets of the disposal group were recognized net of the impairment recorded in the year ended December 31, 2020, such amounts were not reflected on the Company's Condensed Consolidated Balance Sheet at December 31, 2020. Distribution Business On August 26, 2019, the Company completed the sale of its Distribution business for total cash consideration of approximately $700.0 million, excluding certain working capital adjustments which were finalized in the first quarter of 2020. The sale of the Distribution business was a result of the Company's shift in strategy to be a highly focused, technologically differentiated aerospace and engineered products company. As a result of the sale, the Distribution business met the criteria set forth in ASC 205-20 for discontinued operations. Upon closing, the Company entered into a transition services agreement ("TSA") with the buyer, pursuant to which the Company agreed to support the information technology ("IT"), human resources and benefits, tax and treasury functions of the Distribution business for six to twelve months. The buyer exercised the option to extend the support period for up to a maximum of an additional year for certain IT services. The buyer has the right to terminate individual services at any point over the renewal term and began to terminate certain services in 2020. Substantially all services were completed as of the end of the first quarter of 2021; however, the TSA is expected to be fully completed by the third quarter of 2021. Since the sale of the Distribution business, costs associated with the TSA were $17.9 million through April 2, 2021. The Company incurred $0.7 million and $4.1 million in costs associated with the TSA in the three-month fiscal periods ended April 2, 2021 and April 3, 2020, respectively. These amounts were included in costs from transition services agreement on the Company's Condensed Consolidated Statements of Operations. Since the sale of the Distribution business, the Company earned $12.6 million in income associated with the TSA through April 2, 2021. The Company earned $0.5 million and $3.0 million in income associated with the TSA in the three-month fiscal periods ended April 2, 2021 and April 3, 2020, respectively. These amounts were included in income from transition services on the Company's Condensed Consolidated Statements of Operations. Since the sale of the Distribution business, cash outflows from the Company to its former Distribution business totaled $8.1 million through April 2, 2021, which primarily related to Distribution employee and employee-related costs incurred prior to the sale. There were no cash flows from the Company to its former Distribution business in the three-month fiscal period ended April 2, 2021. Cash outflows from the Company to its former Distribution business after the sale totaled $0.3 million for the three-month fiscal period ended April 3, 2020. Since the sale of the Distribution business, cash inflows from the Company's former Distribution business to the Company totaled $17.4 million through April 2, 2021, which primarily related to cash received for services performed under the TSA and the $5.2 million working capital adjustment settled in the first quarter of 2020. Cash inflows from the Company's former Distribution business received in the three-month fiscal periods ended April 2, 2021 and April 3, 2020 totaled $0.5 million and $7.9 million, respectively. In the three-month fiscal period ended April 3, 2020, the Company recorded a pretax gain on disposal of discontinued operations as a result of the final settlement of the working capital adjustment, partially offset by transaction costs. The pretax gain of $0.9 million was subject to income tax expense of $0.2 million, resulting in a gain on disposal of discontinued operations, net of tax of $0.7 million in the three-month fiscal period ended April 3, 2020 which was included in the Company's Condensed Consolidated Statement of Operations. As the gain on the sale of the Distribution business was finalized in 2020, no activity aside from the TSA activity and cash flows discussed above impacted the Company's Condensed Consolidated Financial Statements in the three-month fiscal period ended April 2, 2021.

Business Combinations

Business Combinations	3 Months Ended
	Apr. 02, 2021
Acquisitions [Abstract]
Business Combination Disclosure	4. BUSINESS COMBINATIONS On January 3, 2020, the Company acquired all of the equity interests of Bal Seal Engineering ("Bal Seal"), of Foothill Ranch, California, at a purchase price of $317.5 million . Bal Seal is a leader in the design, development, and manufacturing of highly engineered products, including precision springs, seals, and contacts. With this acquisition, the Company has significantly expanded its portfolio of engineered products and offerings while creating new opportunities to reach customers in medical technology, aerospace and defense, and industrial end markets. Upon closing, the Company funded $24.7 million associated with employee retention plans at Bal Seal. This amount and related interest was included in restricted cash on the Company's Consolidated Balance Sheets as of December 31, 2020. Eligible participants received an allocation of the escrow balance one year following the acquisition date, which was reflected in the Company's cash flows from operating activities for the three-month fiscal period ended April 2, 2021.

Revenue (Notes)

Revenue (Notes)	3 Months Ended
	Apr. 02, 2021
Revenue [Abstract]
Revenue from Contract with Customer [Text Block]	5. REVENUE Disaggregation of Revenue The following table disaggregates total revenue by major product sales by end market. For the Three Months Ended April 2, April 3, In thousands Defense $ 43,611 $ 48,757 Safe and Arm Devices 41,586 58,000 Commercial, Business, & General Aviation 47,958 63,257 Medical 20,583 20,976 Industrial & Other 17,878 16,332 Total revenue $ 171,616 $ 207,322 COVID-19 The impact of the novel coronavirus (“COVID-19”) and the precautionary measures instituted by governments and businesses to mitigate the spread, including limiting non-essential gatherings of people, ceasing all non-essential travel, ordering certain businesses and government agencies to cease non-essential operations at physical locations and issuing “shelter-in-place” orders, have contributed to a general slowdown in the global economy and significant volatility in financial markets. The Company has implemented strategies to limit the risk to its operations with a continued focus on the health of its employees and the satisfaction of its customers’ requirements. Despite all of these efforts to mitigate the risks associated with COVID-19, the effects of the pandemic have adversely impacted our commercial end markets, more specifically Commercial, Business, and General Aviation customers. The Company saw recoveries in the medical and industrial end markets during the first quarter of 2021 and management expects improved performance through the remainder of 2021. As of the date of this filing, the Company's defense and safe and arm device end markets have not been impacted by COVID-19. The extent and duration of time to which COVID-19 may adversely impact the Company depends on future developments, which are highly uncertain and unpredictable at this time. The following table disaggregates total revenue by product types. For the Three Months Ended April 2, April 3, Original Equipment Manufacturer 63 % 61 % Aftermarket 13 % 11 % Safe and Arm Devices 24 % 28 % Total revenue 100 % 100 % 5. REVENUE (CONTINUED) Disaggregation of Revenue - continued The following table illustrates the approximate percentage of revenue recognized for performance obligations satisfied over time versus the amount of revenue recognized for performance obligations satisfied at a point in time: For the Three Months Ended April 2, April 3, Over time 35 % 32 % Point-in-time 65 % 68 % Total revenue 100 % 100 % For contracts in which revenue is recognized over time, the Company performs detailed quarterly reviews of the progress and execution of its performance obligations under these contracts. As part of this process, management reviews information including, but not limited to, any outstanding key contract matters, progress towards completion and the related program schedule, identified risks and opportunities and the related changes in estimates of revenues and costs. The risks and opportunities include management's judgment about the ability and cost to achieve the schedule (e.g., the number and type of milestone events), technical requirements (e.g., a newly-developed product versus a mature product) and other contract requirements. Management must make assumptions and estimates regarding labor productivity and availability, the complexity of the work to be performed, the availability of materials, the length of time to complete the performance obligation (e.g., to estimate increases in wages and prices for materials and related support cost allocations), execution by subcontractors, the availability and timing of funding from customers and overhead cost rates, among other variables. Based upon these reviews, the Company will record the effects of adjustments in profit estimates each period. If at any time management determines that in the case of a particular contract total costs will exceed total contract revenue, a provision for the entire anticipated contract loss is recorded at that time. Net changes in revenue associated with cost growth on the Company's over time contracts were as follows: For the Three Months Ended April 2, April 3, In thousands Net change in revenue due to change in profit estimates $ 2,865 $ (1,115) The net increase in revenue in the three-month fiscal period ended April 2, 2021 was primarily related to favorable cost performance on the joint programmable fuze ("JPF") contract with the U.S. Government ("USG"), partially offset by cost growth on certain structures programs and legacy fuzing contracts. The net reduction in revenue in the three-month fiscal period ended April 3, 2020 was primarily related to cost growth on a structures program and certain legacy fuzing contracts. Unfulfilled Performance Obligations Unfulfilled performance obligations ("backlog") represents the transaction price of firm orders for which work has not been performed and excludes unexercised contract options and potential orders under ordering-type contracts. Backlog at April 2, 2021 and December 31, 2020, and the portion of backlog the Company expects to recognize revenue on over the next twelve months is as follows: April 2, 2021 (1) December 31, In thousands Backlog $ 562,407 $ 631,236 (1) The Company expects to recognize revenue on approximately 72% of backlog as of April 2, 2021 over the next twelve months.

Restructuring Costs

Restructuring Costs	3 Months Ended
	Apr. 02, 2021
Restructuring Costs [Abstract]
Restructuring Costs	RESTRUCTURING AND SEVERANCE COSTS The Company continues to evaluate its cost structure with the objective of a lean organizational structure that provides a scalable infrastructure which facilitates future growth opportunities. In the three-month fiscal period ended April 2, 2021, the Company incurred $1.4 million in severance costs associated with these cost reduction efforts, which were included in restructuring and severance costs on the Company's Condensed Consolidated Statements of Operations. Following the sale of the Company's former Distribution business, the Company announced it would undertake a comprehensive review of its general and administrative functions in order to improve operational efficiency and to align the Company's costs with its revenues. The objective of the initiative is to ensure that the Company has a lean organizational structure that provides a scalable infrastructure that facilitates future growth opportunities. The Company identified information technology functions to be outsourced, workforce reductions and other reductions in certain general and administrative expenses which were completed in 2020 to support the cost savings initiative discussed above. In accordance with ASC 712-10, Compensation - Nonretirement Postemployment Benefits , the Company recorded $1.3 million in severance costs associated with these workforce reductions in the three-month fiscal period ended April 3, 2020, which were included in restructuring and severance costs on the Company's Condensed Consolidated Statements of Operations.

Accounts Receivable, Net

Accounts Receivable, Net	3 Months Ended
	Apr. 02, 2021
Accounts Receivable, after Allowance for Credit Loss [Abstract]
Accounts Receivable, Net	ACCOUNTS RECEIVABLE, NET Accounts receivable, net consisted of the following: April 2, December 31, In thousands Trade receivables $ 22,353 $ 19,945 U.S. Government contracts: Billed 18,106 18,854 Cost and accrued profit - not billed 905 1,080 Commercial and other government contracts Billed 58,428 111,794 Cost and accrued profit - not billed 4,141 4,141 Less allowance for doubtful accounts (1,605) (2,008) Accounts receivable, net $ 102,328 $ 153,806 The Company performs ongoing evaluations of its customers’ current creditworthiness, as determined by the review of their credit information to determine if events have occurred subsequent to the recognition of revenue and the related receivable that provide evidence that such receivable will be realized in an amount less than that recognized at the time of sale. Estimates of credit losses are based on historical losses, current economic conditions, geographic considerations, and in some cases, evaluating specific customer accounts for risk of loss. The following table summarizes the activity in the allowance for doubtful accounts in the three-month fiscal period ended April 2, 2021: In thousands Balance at December 31, 2020 $ (2,008) Provision (173) Amounts written off 301 Recoveries 273 Changes in foreign currency exchange rates 2 Balance at April 2, 2021 $ (1,605) 7. ACCOUNTS RECEIVABLE, NET (CONTINUED) COVID-19 The Company anticipates that the disruptions and delays resulting from the spread of COVID-19 and the measures instituted by the governments and businesses to mitigate its spread could impact the Company's liquidity in the next twelve months. The Company continues to closely monitor the collectability of its receivables from commercial aerospace customers as it recognizes there may be delays in payments due to the impacts of COVID-19 on its customers. As of the date of this filing, the Company does not believe there has been any material impact on the collectability of these receivables. Accounts receivable, net includes amounts for matters such as contract changes, negotiated settlements and claims for unanticipated contract costs. These amounts are as follows: April 2, December 31, In thousands Contract changes, negotiated settlements and claims for unanticipated contract costs $ 900 $ 900

Contract Assets, Contract Costs

Contract Assets, Contract Costs and Contract Liabilities	3 Months Ended
	Apr. 02, 2021
Revenue from Contract with Customer [Abstract]
Contract Assets, Contract Costs and Contract Liabilities	Activity related to contract assets, contract costs and contract liabilities was as follows: April 2, December 31, 2020 $ Change % Change In thousands Contract assets $ 114,601 $ 108,645 $ 5,956 5.5 % Contract costs, current portion $ 5,050 $ 3,511 $ 1,539 43.8 % Contract costs, noncurrent portion $ 7,205 $ 8,311 $ (1,106) (13.3) % Contract liabilities, current portion $ 32,622 $ 39,073 $ (6,451) (16.5) % Contract liabilities, noncurrent portion $ 12,120 $ 11,019 $ 1,101 10.0 % Contract Assets The increase in contract assets was primarily due to the recognition of revenue related to the satisfaction or partial satisfaction of performance obligations during the three-month fiscal period ended April 2, 2021. This increase was primarily related to work performed and not yet billed on the A-10 program and certain fuzing programs, partially offset by amounts billed on the JPF program with the USG. There were no significant impairment losses related to the Company's contract assets during the three-month fiscal periods ended April 2, 2021 and April 3, 2020. Contract assets includes amounts for matters such as contract changes, negotiated settlements and claims for unanticipated contract costs. These amounts were as follows: April 2, December 31, In thousands Contract changes, negotiated settlements and claims for unanticipated contract costs $ 3,184 $ 3,178 Contract Costs At April 2, 2021, costs to fulfill a contract and costs to obtain a contract were $10.3 million and $2.0 million, respectively. At December 31, 2020, costs to fulfill a contract and costs to obtain a contract were $9.3 million and $2.5 million, respectively. These amounts are included in contract costs, current portion and contract costs, noncurrent portion on the Company's Condensed Consolidated Balance Sheets at April 2, 2021 and December 31, 2020. 8. CONTRACT ASSETS, CONTRACT COSTS AND CONTRACT LIABILITIES (CONTINUED) Contract Costs - continued The increase in contract costs, current portion was primarily attributable to the addition of costs to fulfill the K-MAX® program and the reclassification of a portion of costs to fulfill the K-MAX® program and certain structures programs from contract costs, noncurrent portion, partially offset by the amortization of contract costs. For the three-month fiscal periods ended April 2, 2021 and April 3, 2020, amortization of contract costs was $1.9 million and $2.5 million, respectively. The decrease in contract costs, noncurrent portion was primarily attributable to the the reclassification of a portion of costs to fulfill the K-MAX® program and certain structures programs to contract costs, current portion. Contract Liabilities The decrease in contract liabilities, current portion was primarily due to revenue recognized on a JPF direct commercial sales ("DCS") contract, K-MAX® spares and support and the SH-2G program for New Zealand, partially offset by advances received for K-MAX® spares and support and the SH-2G program for New Zealand. Revenue recognized related to contract liabilities, current portion was $9.4 million and $14.7 million in the three-month fiscal periods ended April 2, 2021 and April 3, 2020, respectively.

Fair Value Measurements

Fair Value Measurements	3 Months Ended
	Apr. 02, 2021
Fair Value Disclosures [Abstract]
Fair Value Measurements	FAIR VALUE MEASUREMENTS Fair value is defined as the exchange price that would be received for an asset or paid to transfer a liability (an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants at the measurement date. The Company uses a three-level fair value hierarchy that prioritizes the inputs used to measure fair value. This hierarchy requires the Company to maximize the use of observable inputs and minimize the use of unobservable inputs. The three levels of inputs used to measure fair value are as follows: • Level 1 — Quoted prices in active markets for identical assets or liabilities. • Level 2 — Observable inputs other than quoted prices included in Level 1, such as quoted prices in markets that are not active or other inputs that are observable or can be corroborated by observable market data. • Level 3 — Unobservable inputs that are supported by little or no market activity and are significant to the fair value of the assets or liabilities. This includes certain pricing models, discounted cash flow methodologies and similar techniques that use significant unobservable inputs. The following table presents the carrying value and fair value of financial instruments that are not carried at fair value: April 2, 2021 December 31, 2020 Carrying Value Fair Value Carrying Value Fair Value In thousands Debt (1) $ 189,657 $ 216,525 $ 188,919 $ 230,093 (1) These amounts are classified within Level 2. The above fair values were computed based on quoted market prices and discounted future cash flows (observable inputs), as applicable. Differences from carrying values are attributable to interest rate changes subsequent to when the transactions occurred. The fair values of cash and cash equivalents, accounts receivable, net and accounts payable - trade approximate their carrying amounts due to the short-term maturities of these instruments. The Company's cash and cash equivalents at April 2, 2021 and December 31, 2020 included $93.5 million and $51.5 million of Level 1 money market funds, respectively. 9. FAIR VALUE MEASUREMENTS (CONTINUED) Recurring Fair Value Measurements The Company holds derivative instruments for foreign exchange contracts that are measured at fair value using observable market inputs such as forward rates and its counterparties’ credit risks. Based on these inputs, the derivative instruments are classified within Level 2 of the valuation hierarchy. At April 2, 2021 and December 31, 2020, the derivative instruments were included in other current assets and other current liabilities on the Company's Condensed Consolidated Balance Sheets. Based on the Company's continued ability to trade and enter into forward contracts and interest rate swaps, the Company considers the markets for its fair value instruments to be active. The Company evaluated the credit risk associated with the counterparties to these derivative instruments and determined that as of April 2, 2021, such credit risks had not had an adverse impact on the fair value of these instruments.

Derivative Financial Instrument

Derivative Financial Instruments	3 Months Ended
	Apr. 02, 2021
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Financial Instruments	DERIVATIVE FINANCIAL INSTRUMENTS The Company is exposed to certain risks relating to its ongoing business operations, including market risks relating to fluctuations in foreign currency exchange rates and interest rates. Derivative financial instruments are recognized on the Condensed Consolidated Balance Sheets as either assets or liabilities and are measured at fair value. Changes in the fair values of derivatives are recorded each period in earnings or accumulated other comprehensive income, depending on whether a derivative is effective as part of a hedged transaction. Gains and losses on derivative instruments reported in accumulated other comprehensive income are subsequently included in earnings in the periods in which earnings are affected by the hedged item. The Company does not use derivative instruments for speculative purposes. Forward Exchange Contracts The Company holds forward exchange contracts designed to hedge forecasted transactions denominated in foreign currencies and to minimize the impact of foreign currency fluctuations on the Company’s earnings and cash flows. Some of these contracts are designated as cash flow hedges. The Company will include in earnings amounts currently included in accumulated other comprehensive income upon recognition of cost of sales related to the underlying transaction. These contracts were not material to the Company's Condensed Consolidated Balance Sheets as of April 2, 2021 and December 31, 2020. The activity related to these contracts was not material to the Company's Condensed Consolidated Financial Statements for the three-month fiscal periods ended April 2, 2021 and April 3, 2020.

Inventories

Inventories	3 Months Ended
	Apr. 02, 2021
Inventory Disclosure [Abstract]
Inventories	INVENTORIES Inventories consisted of the following: April 2, December 31, In thousands Raw materials $ 19,363 $ 19,502 Contracts and other work in process (including certain general stock materials) 141,866 129,241 Finished goods 36,074 36,329 Inventories $ 197,303 $ 185,072 Inventories include amounts associated with matters such as contract changes, negotiated settlements and claims for unanticipated contract costs. These amounts were as follows: April 2, December 31, In thousands Contract changes, negotiated settlements and claims for unanticipated contract costs $ 500 $ 500 11. INVENTORIES (CONTINUED) At April 2, 2021 and December 31, 2020, $61.4 million and $60.4 million, respectively, of K-MAX® inventory was included in contracts and other work in process inventory and finished goods on the Company's Condensed Consolidated Balance Sheets. Management believes that approximately $24.5 million of the K-MAX® inventory will be sold after April 2, 2022, based upon the anticipation of additional aircraft manufacturing and the requirements to support the fleet for the foreseeable future. At April 2, 2021 and December 31, 2020, $6.1 million and $6.3 million, respectively, of SH-2G(I) inventory was included in contracts and other work in process inventory on the Company's Condensed Consolidated Balance Sheets. Management believes that approximately $5.1 million of the SH-2G(I) inventory will be sold after April 2, 2022. This balance represents spares requirements and inventory to be used on SH-2G programs.

Goodwill and Other Intangible A

Goodwill and Other Intangible Assets, Net	3 Months Ended
	Apr. 02, 2021
Intangible Assets, Net (Including Goodwill) [Abstract]
Goodwill and Other Intangible Assets, Net	GOODWILL AND OTHER INTANGIBLE ASSETS, NET Goodwill The following table sets forth the change in the carrying amount of goodwill for continuing operations: In thousands Gross balance at December 31, 2020 $ 313,803 Accumulated impairment (66,559) Net balance at December 31, 2020 247,244 Additions — Impairments — Foreign currency translation (3,556) Ending balance at April 2, 2021 $ 243,688 Other Intangibles Other intangible assets consisted of: At April 2, At December 31, 2021 2020 Amortization Gross Accumulated Gross Accumulated In thousands Customer lists / relationships 6-38 years $ 127,974 $ (31,205) $ 128,882 $ (30,094) Developed technologies 7-20 years 45,458 (10,581) 45,798 (9,665) Trademarks / trade names 15-40 years 17,152 (2,242) 17,353 (2,149) Non-compete agreements and other 1-15 years 4,681 (4,668) 5,290 (5,276) Patents 17 years 523 (466) 523 (464) Total $ 195,788 $ (49,162) $ 197,846 $ (47,648)

Pension Plans

Pension Plans	3 Months Ended
	Apr. 02, 2021
Defined Benefit Plans and Other Postretirement Benefit Plans Disclosures [Abstract]
Compensation and Employee Benefit Plans	PENSION PLANS Components of net pension cost for the Qualified Pension Plan and Supplemental Employees’ Retirement Plan ("SERP") were as follows: For the Three Months Ended Qualified Pension Plan SERP April 2, April 3, April 2, April 3, In thousands Service cost $ 1,300 $ 1,309 $ — $ — Interest cost on projected benefit obligation 3,525 5,255 15 41 Expected return on plan assets (11,275) (10,796) — — Amortization of net loss 1,075 1,201 17 236 Net pension (income) cost $ (5,375) $ (3,031) $ 32 $ 277 The Company contributed $10.0 million to the qualified pension plan subsequent to the end of the first quarter, and $0.1 million to the SERP through the end of the first quarter of 2021. No further contributions are expected to be made to the qualified pension plan during 2021. The Company plans to contribute an additional $2.6 million to the SERP in 2021. For the 2020 plan year, the Company contributed $10.0 million to the qualified pension plan and $0.5 million to the SERP.

Commitments and Contingencies

Commitments and Contingencies	3 Months Ended
	Apr. 02, 2021
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	COMMITMENTS AND CONTINGENCIES Pension Freeze Effective December 31, 2015, the Company's qualified pension plan was frozen with respect to future benefit accruals. Under USG Cost Accounting Standard (“CAS”) 413, the Company must determine the USG’s share of any pension curtailment adjustment calculated in accordance with CAS. Such adjustments can result in an amount due to the USG for pension plans that are in a surplus position or an amount due to the contractor for plans that are in a deficit position. During the fourth quarter of 2016, the Company accrued a $0.3 million liability representing its estimate of the amount due to the USG based on the Company's pension curtailment adjustment calculation, which was submitted to the USG for review in December 2016. The Company maintained its accrual at $0.3 million as of April 2, 2021. There can be no assurance that the ultimate resolution of this matter will not have a material adverse effect on the Company's results of operations, financial position and cash flows. New Hartford Property In connection with the sale of the Company’s Music segment in 2007, the Company assumed responsibility for meeting certain requirements of the Connecticut Transfer Act (the “Transfer Act”) that applied to the transfer of the New Hartford, Connecticut, facility leased by that segment for guitar manufacturing purposes (“Ovation”). Under the Transfer Act, those responsibilities essentially consist of assessing the site's environmental conditions and remediating environmental impairments, if any, caused by Ovation's operations prior to the sale. The site is a multi-tenant industrial park, in which Ovation and other unrelated entities lease space. The environmental assessment process, which began in 2008, has been completed and site remediation is in process. The Company's estimate of its portion of the cost to assess the environmental conditions and remediate this site is $2.3 million, all of which has been accrued. The remediation has been nearly completed and the Company continues to monitor the results of the remediation. The total amount paid to date in connection with these environmental remediation activities is $1.7 million. At April 2, 2021, the Company had $0.6 million accrued for these environmental remediation activities. A portion ($0.1 million) of the accrual related to this property is included in other current liabilities and the balance is included in other long-term liabilities. The remaining balance of the accrual reflects the total anticipated cost of completing these environmental remediation activities. Although it is reasonably possible that additional costs will be paid in connection with the resolution of this matter, the Company is unable to estimate the amount of such additional costs, if any, at this time. 14. COMMITMENTS AND CONTINGENCIES (CONTINUED) Bloomfield Property In connection with the Company’s 2008 purchase of the portion of the Bloomfield campus that Kaman Aerospace Corporation had leased from NAVAIR, the Company assumed responsibility for environmental remediation at the facility as may be required under the Transfer Act and is currently remediating the property under the guidance of the Connecticut Department of Environmental Protection. The assumed environmental liability of $10.3 million was determined by taking the undiscounted estimated remediation liability of $20.8 million and discounting it at a rate of 8%. This remediation process will take many years to complete. The total amount paid to date in connection with these environmental remediation activities is $14.5 million. At April 2, 2021, the Company had $2.4 million accrued for these environmental remediation activities. A portion ($0.6 million) of the accrual related to this property is included in other current liabilities, and the balance is included in other long-term liabilities. Although it is reasonably possible that additional costs will be paid in connection with the resolution of this matter, the Company is unable to estimate the amount of such additional costs, if any, at this time. Offset Agreement During January 2018, the Company entered into an offset agreement as a condition to obtaining orders from a foreign customer for the Company's JPF product. This agreement is designed to return economic value to the foreign country by requiring the Company to engage in activities supporting local defense or commercial industries, promoting a balance of trade, developing in-country technology capabilities or addressing other local development priorities. The offset agreement may be satisfied through activities that do not require a direct cash payment, including transferring technology, providing manufacturing, training and other consulting support to in-country projects and the purchase by third parties of supplies from in-country vendors. This agreement may also be satisfied through the Company's use of cash for activities, such as subcontracting with local partners, purchasing supplies from in-country vendors, providing financial support for in-country projects and making investments in local ventures. At April 2, 2021, the offset agreement had an outstanding notional value of approximately $194.0 million, which is equal to sixty percent of the contract value of $324.0 million as defined by the agreement between the customer and the Company. The amount ultimately applied against the offset agreement is based on negotiations with the customer and may require cash outlays that represent only a fraction of the notional value in the offset agreement. The Company continues to work with the customer to further define the requirements to satisfy the offset agreement. The satisfaction of the offset requirements will be determined by the customer and is expected to occur over a seven-year period. Deliveries under the contract are expected to be completed prior to satisfaction of the offset requirements. In the event the offset requirements of the contract are not met, the Company could be liable for potential penalties up to $16.5 million payable to the customer. The Company began recognizing revenue associated with this contract in the third quarter of 2019 and has considered the potential penalties of $16.5 million as a reduction to the transaction price in its determination of the value of the performance obligations within this contract. At April 2, 2021, $12.1 million in contract liabilities associated with the potential penalties of the offset requirements were included on the Company's Consolidated Balance Sheets. At the point the Company has an approved plan to satisfy the offset requirements, the Company will update the estimate of the contract transition price, including any potential penalties or contract costs associated with the plan to fulfill the offset requirements. Guarantee During 2020, the Company and the USG entered into a Guaranty Agreement, pursuant to which the Company agreed to guarantee the full, complete and satisfactory performance of its subsidiary, Kaman Precision Products, Inc. ("KPPI") under all current and future contracts with the USG. As of the date of this filing, the only contract in place between KPPI and the USG relates to the production and sale of the JPF. KPPI is currently fulfilling the requirements of Option 15 and has completed pricing negotiations on Option 16. The guarantee was provided in lieu of a periodic financial capability review by the Financial Capacity Team ("FCT") of the Defense Contract Management Agency ("DCMA"). The Company is unable to estimate the maximum potential amount of future payments under the guarantee as it is dependent on costs incurred by the USG in the event of default. Although the Company believes the risk of default is low given the maturity and operational performance of the JPF program, there can be no assurance that the guarantee will not have a material adverse effect on the Company's results of operations, financial position and cash flows.

Computation of Earnings Per Sha

Computation of Earnings Per Share	3 Months Ended
	Apr. 02, 2021
Earnings Per Share Reconciliation [Abstract]
Computation of Earnings Per Share	COMPUTATION OF EARNINGS PER SHARE The computation of basic earnings per share is based on net earnings divided by the weighted average number of shares of common stock outstanding for each period. The computation of diluted earnings per share reflects the common stock equivalency of dilutive options granted to employees under the Company's stock incentive plan, shares issuable on redemption of its convertible notes and shares issuable upon redemption of outstanding warrants. For the Three Months Ended April 2, April 3, In thousands, except per share amounts Earnings (loss) from continuing operations $ 7,984 $ (407) Total earnings from discontinued operations — 692 Net earnings (loss) $ 7,984 $ 285 Basic: Weighted average number of shares outstanding 27,815 27,809 Earnings (loss) per share from continuing operations $ 0.29 $ (0.01) Earnings per share from discontinued operations 0.00 0.02 Basic earnings (loss) per share $ 0.29 $ 0.01 Diluted: Weighted average number of shares outstanding 27,815 27,809 Weighted average shares issuable on exercise of dilutive stock options 52 82 Total 27,867 27,891 Earnings (loss) per share from continuing operations $ 0.29 $ (0.01) Earnings per share from discontinued operations 0.00 0.02 Diluted earnings (loss) per share $ 0.29 $ 0.01 Equity awards For the three-month fiscal periods ended April 2, 2021 and April 3, 2020, respectively, 440,959 and 443,379 shares issuable under equity awards granted to employees were excluded from the calculation of diluted earnings per share as they were anti-dilutive based on the average stock price during the periods. 2024 Convertible Notes For the three-month fiscal periods ended April 2, 2021 and April 3, 2020, shares issuable under the Convertible Notes due 2024 were excluded from the diluted earnings per share calculation because the conversion price was more than the average market price of the Company's stock during the periods.

Share-based Arrangements

Share-based Arrangements	3 Months Ended
	Apr. 02, 2021
Share-based Payment Arrangement, Noncash Expense [Abstract]
Share-based Payment Arrangement	16. SHARE-BASED ARRANGEMENTS The Company accounts for stock options, restricted stock awards ("RSAs"), restricted stock units and performance stock units ("PSUs") as equity awards and measures the cost of all share-based payments, including stock options, at fair value on the grant date and recognizes this cost in the statement of operations. The Company also has an employee stock purchase plan which is accounted for as a liability award. In 2021, the Company modified its long-term incentive program to increase the emphasis on equity. Beginning in the first quarter of 2021, the long-term incentive awards granted to the Company's Named Executive Officers ("NEOs") will consist of a combination of service-based RSAs and PSUs which are intended to be settled in shares, as opposed to cash-based awards that had been utilized in the past. These awards are expected to increase the alignment of interests between the Company's NEOs and shareholders and help build stock ownership for new executives, supporting both executive retention and the Company's long-term financial performance. RSAs will vest over a three-year period on each of the first three anniversaries of the date of grant. The number of PSUs that will vest will be determined based on total shareholder return ("TSR") and return on total invested capital ("ROIC") over a three-year performance period, each of which will remain equally weighted in determining payouts. The achievement level for both factors may range from zero to 200%. Compensation expense for stock options, RSAs, restricted stock units and PSUs is recognized on a straight-line basis over the vesting period of the awards. Throughout the course of the vesting period, the Company monitors the achievement level for the ROIC metric of the PSUs compared to the ROIC target and adjusts the number of shares expected to be earned, and the related compensation expense recorded thereafter, to reflect the most probable outcome. Share-based compensation expense recorded for the three-month fiscal periods ended April 2, 2021 and April 3, 2020 was $1.7 million and $1.6 million, respectively. These amounts were included in selling, general and administrative expenses on the Company's Condensed Consolidated Statements of Operations. Stock option activity was as follows: For the Three Months Ended April 2, 2021 Options Weighted - average Options outstanding at beginning of period 772,625 $ 54.87 Granted 4,990 $ 55.85 Exercised (11,095) $ 38.74 Forfeited or expired — $ — Options outstanding at April 2, 2021 766,520 $ 55.11 The fair value of each option award is estimated on the date of grant using the Black-Scholes option valuation model. The following table indicates the weighted-average assumptions used in estimating fair value: For the Three Months Ended April 2, April 3, Expected option term (years) 4.9 4.9 Expected volatility 35.7 % 20.2 % Risk-free interest rate 0.5 % 1.4 % Expected dividend yield 1.6 % 1.3 % Per share fair value of options granted $14.89 $10.74 16. SHARE-BASED ARRANGEMENTS (CONTINUED) Restricted stock award and restricted stock unit activity were as follows: For the Three Months Ended April 2, 2021 Restricted Stock Weighted- Restricted Stock outstanding at beginning of period 109,514 $ 53.66 Granted 66,975 $ 55.88 Vested (26,151) $ 57.56 Forfeited or expired — $ — Restricted Stock outstanding at April 2, 2021 150,338 $ 53.97 Performance stock unit activity was as follows: For the Three Months Ended April 2, 2021 Performance Stock Weighted- Performance Stock outstanding at beginning of period — $ — Granted (1) 82,460 $ 70.17 Vested — $ — Forfeited or expired — $ — Performance Stock outstanding at April 2, 2021 82,460 $ 70.17 (1) The PSUs granted in the first quarter of 2021 assumed a 100% achievement level. The fair value of the PSUs based on TSR was estimated on the date of grant using a Monte-Carlo simulation model. The following table indicates the weighted-average assumptions used in estimating fair value: For the Three Months Ended April 2, 2021 Expected term (years) 2.9 Expected volatility 41.3 % Risk-free interest rate 0.2 % Expected dividend yield 1.4 % Per share fair value of performance stock granted $ 84.49

Shareholders' Equity and Accumu

Shareholders' Equity and Accumulated Other Comprehensive Income	3 Months Ended
	Apr. 02, 2021
Stockholders' Equity Note [Abstract]
Shareholders' Equity and Accumulated Other Comprehensive Income	SHAREHOLDERS' EQUITY AND ACCUMULATED OTHER COMPREHENSIVE INCOME Changes in shareholders’ equity for the three-month fiscal periods ended April 2, 2021, and April 3, 2020, were as follows: For the Three Months Ended April 2, April 3, In thousands Beginning balance $ 746,438 $ 823,202 Comprehensive income (loss) 24,339 (9,434) Dividends declared (per share of common stock, $0.20 and $0.20, respectively) (5,562) (5,555) Employee stock plans and related tax benefit 880 1,455 Purchase of treasury shares (344) (14,072) Share-based compensation expense 1,743 1,633 Impact of change in tax accounting standard (275) — Ending balance $ 767,219 $ 797,229 The components of accumulated other comprehensive income (loss) are shown below: For the Three Months Ended April 2, April 3, In thousands Foreign currency translation and other: Beginning balance $ (717) $ (16,351) Net loss on foreign currency translation (7,322) (10,826) Reclassification to net income (1) 22,835 — Other comprehensive income (loss), net of tax 15,513 (10,826) Ending balance $ 14,796 $ (27,177) Pension and other post-retirement benefits (2) : Beginning balance $ (130,104) $ (134,542) Amortization of net loss, net of tax expense of $250 and $330, respectively 842 1,107 Other comprehensive income, net of tax 842 1,107 Ending balance $ (129,262) $ (133,435) Total accumulated other comprehensive loss $ (114,466) $ (160,612) (1) The foreign currency translation reclassified to net income relates to the sale of the Company's UK Composites business. This balance was included in the loss accrual recorded in impairment on assets held for sale on the Company's Consolidated Statement of Operations in the year ended December 31, 2020 (see Note 3, Disposals , for additional information). (2) These accumulated other comprehensive income components are included in the computation of net periodic pension cost. (See Note 13, Pension Plans for additional information.)

Income Taxes

Income Taxes	3 Months Ended
	Apr. 02, 2021
Income Tax Disclosure [Abstract]
Income Taxes	INCOME TAXES For the Three Months Ended April 2, April 3, Effective Income Tax Rate from continuing operations 2.5 % 52.1 % The effective income tax rate represents the combined federal, state and foreign tax effects attributable to pretax earnings from continuing operations for the period. The decrease in the effective tax rate from continuing operations for the three-month fiscal period ended April 2, 2021, compared to the corresponding rate in the prior year was primarily caused by a discrete benefit received in the current period related to the sale of the Company's UK Composites business and the positive earnings in the current period versus a loss in the prior period. A valuation allowance for deferred tax assets, including those associated with net operating loss carryforwards, is recognized when it is more likely than not that some or all of the benefit from the deferred tax asset will not be realized. To assess that likelihood, the Company uses estimates and judgment regarding future taxable income, and considers the tax consequences in the jurisdiction where such taxable income is generated, to determine whether a valuation allowance is required. Such evidence can include current financial position, results of operations, both actual and forecasted, the reversal of deferred tax liabilities, and tax planning strategies, as well as the current and forecasted business economics. The Company has assessed both positive and negative evidence to estimate whether sufficient future taxable income will be generated to utilize the $35.1 million of deferred tax assets recorded as of April 2, 2021. Through the end of the first quarter of 2021, the Company believes it is more likely than not that only $30.3 million of these deferred tax assets will be realized and, as such, has recorded a valuation allowance of $4.8 million. Going forward, management will continue to assess the available positive and negative evidence to determine whether it is likely sufficient future taxable income will be generated to permit the use of these deferred tax assets. The amount of the deferred tax asset considered realizable could be adjusted if estimates of future taxable income are reduced or increased, or if additional weight is given to subjective evidence such as future expected growth because objective negative evidence in the form of cumulative losses is no longer present.

Subsequent Events

Subsequent Events	3 Months Ended
	Apr. 02, 2021
Subsequent Events [Abstract]
Subsequent Events	SUBSEQUENT EVENTSThe Company has evaluated subsequent events through the issuance date of these financial statements. No material subsequent events were identified that require disclosure.

Basis of Presentation Basis of

Basis of Presentation Basis of Presentation (Policies) - USD ($) $ in Millions	3 Months Ended
	Apr. 02, 2021	Aug. 26, 2019
Basis of Presentation [Abstract]
Disposal Group, Including Discontinued Operation, Consideration		$ 700
Consolidation, Policy [Policy Text Block]	BASIS OF PRESENTATION During the third quarter of 2019, Kaman Corporation ("the Company") completed the sale of its Distribution business for total cash consideration of approximately $700.0 million, excluding certain working capital adjustments which were finalized in the first quarter of 2020 and transaction costs. The finalization of the gain on the sale of the Distribution business was recorded to gain on disposal of discontinued operations, net of tax on the Company's Condensed Consolidated Statements of Operations in the three-month fiscal period ended April 3, 2020. See Note 3, Disposals , to the Condensed Consolidated Financial Statements for further information. During the fourth quarter of 2020, the Company committed to a plan and received approval from its Board of Directors to sell its United Kingdom ("UK") Composites division. As a result of the approved plan, the UK Composites division met the criteria set forth in ASC 205-20 for held for sale. At December 31, 2020, the assets of the UK Composites business were considered impaired as the estimated fair value of the disposal group was lower than the estimated carrying value of the UK Composites business. As a result, the assets of the UK Composites business were written off and the remaining loss related to the anticipated sale of the disposal group was accrued for in liabilities held for sale, current portion on the Company's Consolidated Balance Sheets. The related liabilities of the UK division to be sold were reclassified to liabilities held for sale, respectively, as of December 31, 2020 on the Company's Consolidated Balance Sheets. On February 2, 2021, the Company sold its UK Composites business. See Note 3, Discontinued Operations and Liabilities Held for Sale , in the Company’s Annual Report on Form 10-K for the year ended December 31, 2020 ("2020 Form 10-K") for additional information. In the opinion of management, the condensed consolidated financial information reflects all adjustments necessary for a fair statement of the Company's financial position, results of operations and cash flows for the interim periods presented, but do not include all disclosures required by accounting principles generally accepted in the United States of America ("GAAP"). All such adjustments are of a normal recurring nature, unless otherwise disclosed in this report. Certain amounts in prior year financial statements and notes thereto have been reclassified to conform to current year presentation. The statements should be read in conjunction with the consolidated financial statements and notes included in the Company’s 2020 Form 10-K. The Company has a calendar year-end; however, its first three fiscal quarters follow a 13-week convention, with each quarter ending on a Friday. The first quarters for 2021 and 2020 ended on April 2, 2021, and April 3, 2020, respectively.

Recent Accounting Standards Det

Recent Accounting Standards Details (Policies)	3 Months Ended
	Apr. 02, 2021
Accounting Policies [Abstract]
New Accounting Pronouncements, Policy [Policy Text Block]	RECENT ACCOUNTING STANDARDS Recent Accounting Standards Adopted In December 2019, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") 2019-12, "Income Taxes (Topic 740) - Simplifying the Accounting for Income Taxes". The objective of the standard is to simplify the accounting for income taxes by removing certain exceptions and to improve consistent application of Topic 740 by clarifying and amending existing guidance. The standard update is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2020. Early adoption of the standard is permitted, including adoption in any interim period for which financial statements have not yet been issued. If early adopted in an interim period, the adjustments should be reflected as of the beginning of the annual period that includes that interim period. All amendments under the standard must be adopted in the same period. In 2021, the Company adopted ASU 2019-12 using the modified retrospective basis which resulted in a cumulative effect reduction to retained earnings of $0.3 million. In August 2020, the FASB issued ASU 2020-06, "Debt - Debt with Conversion and Other Options (Subtopic 470-20) and Derivatives and Hedging - Contracts in Entity’s Own Equity (Subtopic 815-40): Accounting for Convertible Instruments and Contracts in an Entity’s Own Equity". The objective of this standard update is to simplify the accounting for certain financial instruments with characteristics of liabilities and equity. The update removes certain separation models between a debt component and equity or derivative component for certain convertible instruments, adds new disclosure requirements for convertible instruments to improve the decision usefulness and relevance of the information being provided to users of financial statements, clarifies the guidance for determining whether a contract qualifies for a scope exception from derivative accounting, and amends EPS guidance to improve consistency. The standard update is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2021. Early adoption of the standard is permitted, but no earlier than fiscal years beginning after December 15, 2020, including interim periods within those fiscal years. An entity should adopt the guidance as of the beginning of its annual fiscal year and can do so using a modified retrospective method or fully retrospective method of transition. The Company is currently assessing the potential impact this standard update could have on its consolidated financial statements. 2. RECENT ACCOUNTING STANDARDS (CONTINUED) Recent Accounting Standards Yet to be Adopted In March 2020, the FASB issued ASU 2020-04, "Reference Rate Reform (Topic 848) - Facilitation of the Effects of Reference Rate Reform on Financial Reporting". The objective of the standard is to address operational challenges likely to arise in accounting for contract modifications and hedge accounting due to reference rate reform. The amendments in this ASU provide optional expedients and exceptions for applying GAAP to contracts, hedging relationships and other transactions that reference LIBOR or another reference rate expected to be discontinued because of reference rate reform. The standard update is effective for all entities as of March 12, 2020 through December 31, 2022. An entity may elect to apply the amendments for contract modifications by topic or industry subtopic as of any date from the beginning of an interim period that includes or is subsequent to March 12, 2020, or prospectively from a date within an interim period that includes or is subsequent to March 12, 2020. Once elected for a topic or industry subtopic, the amendments in this standard update must be applied prospectively for all eligible contract modifications for that topic or industry subtopic. An entity may elect to apply the amendments for eligible hedging relationships existing as of the beginning of the interim period that includes March 12, 2020 and to new eligible hedging relationships entered into after the beginning of the interim period that includes March 12, 2020. If an entity elects to apply any of the amendments for an eligible hedging relationship existing as of the beginning of the interim period that includes March 12, 2020, any adjustments as a result of those elections must be reflected as of the beginning of that interim period. If an entity elects to apply any of the amendments for a new hedging relationship entered into between the beginning of the interim period that includes March 12, 2020 and March 12, 2020, any adjustments as a result of those elections must be reflected as of the beginning of the hedging relationship. The impact of the adoption of this standard update is dependent on the Company's contracts modifications as a result of reference rate reform; however, the Company does not expect the adoption of the amendments associated with hedging relationships to have a material impact on the Company's consolidated financial statements. Subsequent to the issuance of ASU 2020-04, the FASB issued the following update: ASU 2021-01, "Reference Rate Reform (Topic 848) - Scope". The amendments in this update affect the guidance within ASU 2020-04 and are being assessed with ASU 2020-04.
Recent Accounting Standards	RECENT ACCOUNTING STANDARDS Recent Accounting Standards Adopted In December 2019, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") 2019-12, "Income Taxes (Topic 740) - Simplifying the Accounting for Income Taxes". The objective of the standard is to simplify the accounting for income taxes by removing certain exceptions and to improve consistent application of Topic 740 by clarifying and amending existing guidance. The standard update is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2020. Early adoption of the standard is permitted, including adoption in any interim period for which financial statements have not yet been issued. If early adopted in an interim period, the adjustments should be reflected as of the beginning of the annual period that includes that interim period. All amendments under the standard must be adopted in the same period. In 2021, the Company adopted ASU 2019-12 using the modified retrospective basis which resulted in a cumulative effect reduction to retained earnings of $0.3 million. In August 2020, the FASB issued ASU 2020-06, "Debt - Debt with Conversion and Other Options (Subtopic 470-20) and Derivatives and Hedging - Contracts in Entity’s Own Equity (Subtopic 815-40): Accounting for Convertible Instruments and Contracts in an Entity’s Own Equity". The objective of this standard update is to simplify the accounting for certain financial instruments with characteristics of liabilities and equity. The update removes certain separation models between a debt component and equity or derivative component for certain convertible instruments, adds new disclosure requirements for convertible instruments to improve the decision usefulness and relevance of the information being provided to users of financial statements, clarifies the guidance for determining whether a contract qualifies for a scope exception from derivative accounting, and amends EPS guidance to improve consistency. The standard update is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2021. Early adoption of the standard is permitted, but no earlier than fiscal years beginning after December 15, 2020, including interim periods within those fiscal years. An entity should adopt the guidance as of the beginning of its annual fiscal year and can do so using a modified retrospective method or fully retrospective method of transition. The Company is currently assessing the potential impact this standard update could have on its consolidated financial statements. 2. RECENT ACCOUNTING STANDARDS (CONTINUED) Recent Accounting Standards Yet to be Adopted In March 2020, the FASB issued ASU 2020-04, "Reference Rate Reform (Topic 848) - Facilitation of the Effects of Reference Rate Reform on Financial Reporting". The objective of the standard is to address operational challenges likely to arise in accounting for contract modifications and hedge accounting due to reference rate reform. The amendments in this ASU provide optional expedients and exceptions for applying GAAP to contracts, hedging relationships and other transactions that reference LIBOR or another reference rate expected to be discontinued because of reference rate reform. The standard update is effective for all entities as of March 12, 2020 through December 31, 2022. An entity may elect to apply the amendments for contract modifications by topic or industry subtopic as of any date from the beginning of an interim period that includes or is subsequent to March 12, 2020, or prospectively from a date within an interim period that includes or is subsequent to March 12, 2020. Once elected for a topic or industry subtopic, the amendments in this standard update must be applied prospectively for all eligible contract modifications for that topic or industry subtopic. An entity may elect to apply the amendments for eligible hedging relationships existing as of the beginning of the interim period that includes March 12, 2020 and to new eligible hedging relationships entered into after the beginning of the interim period that includes March 12, 2020. If an entity elects to apply any of the amendments for an eligible hedging relationship existing as of the beginning of the interim period that includes March 12, 2020, any adjustments as a result of those elections must be reflected as of the beginning of that interim period. If an entity elects to apply any of the amendments for a new hedging relationship entered into between the beginning of the interim period that includes March 12, 2020 and March 12, 2020, any adjustments as a result of those elections must be reflected as of the beginning of the hedging relationship. The impact of the adoption of this standard update is dependent on the Company's contracts modifications as a result of reference rate reform; however, the Company does not expect the adoption of the amendments associated with hedging relationships to have a material impact on the Company's consolidated financial statements. Subsequent to the issuance of ASU 2020-04, the FASB issued the following update: ASU 2021-01, "Reference Rate Reform (Topic 848) - Scope". The amendments in this update affect the guidance within ASU 2020-04 and are being assessed with ASU 2020-04.

Disposals (Tables)

Disposals (Tables)	3 Months Ended
	Apr. 02, 2021
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Disposal Groups, Including Discontinued Operations [Table Text Block]	In thousands Proceeds received from the sale of the UK Composites business $ 3,600 Assets, including cash on hand 23,460 Liabilities 6,618 Net book value of business 16,842 UK cumulative foreign currency translation adjustment balance 22,835 Transaction costs 442 Loss on the sale of the UK Composites business $ 36,519

Revenue (Tables)

Revenue (Tables)	3 Months Ended
	Apr. 02, 2021
Disaggregation of Revenue [Line Items]
Disaggregation of Revenue [Table Text Block]	For the Three Months Ended April 2, April 3, In thousands Defense $ 43,611 $ 48,757 Safe and Arm Devices 41,586 58,000 Commercial, Business, & General Aviation 47,958 63,257 Medical 20,583 20,976 Industrial & Other 17,878 16,332 Total revenue $ 171,616 $ 207,322 COVID-19 The impact of the novel coronavirus (“COVID-19”) and the precautionary measures instituted by governments and businesses to mitigate the spread, including limiting non-essential gatherings of people, ceasing all non-essential travel, ordering certain businesses and government agencies to cease non-essential operations at physical locations and issuing “shelter-in-place” orders, have contributed to a general slowdown in the global economy and significant volatility in financial markets. The Company has implemented strategies to limit the risk to its operations with a continued focus on the health of its employees and the satisfaction of its customers’ requirements. Despite all of these efforts to mitigate the risks associated with COVID-19, the effects of the pandemic have adversely impacted our commercial end markets, more specifically Commercial, Business, and General Aviation customers. The Company saw recoveries in the medical and industrial end markets during the first quarter of 2021 and management expects improved performance through the remainder of 2021. As of the date of this filing, the Company's defense and safe and arm device end markets have not been impacted by COVID-19. The extent and duration of time to which COVID-19 may adversely impact the Company depends on future developments, which are highly uncertain and unpredictable at this time. The following table disaggregates total revenue by product types. For the Three Months Ended April 2, April 3, Original Equipment Manufacturer 63 % 61 % Aftermarket 13 % 11 % Safe and Arm Devices 24 % 28 % Total revenue 100 % 100 % 5. REVENUE (CONTINUED) Disaggregation of Revenue - continued The following table illustrates the approximate percentage of revenue recognized for performance obligations satisfied over time versus the amount of revenue recognized for performance obligations satisfied at a point in time: For the Three Months Ended April 2, April 3, Over time 35 % 32 % Point-in-time 65 % 68 % Total revenue 100 % 100 %
Schedule of Change in Accounting Estimate [Table Text Block]	Net changes in revenue associated with cost growth on the Company's over time contracts were as follows: For the Three Months Ended April 2, April 3, In thousands Net change in revenue due to change in profit estimates $ 2,865 $ (1,115)
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table Text Block]	Backlog at April 2, 2021 and December 31, 2020, and the portion of backlog the Company expects to recognize revenue on over the next twelve months is as follows: April 2, 2021 (1) December 31, In thousands Backlog $ 562,407 $ 631,236 (1) The Company expects to recognize revenue on approximately 72% of backlog as of April 2, 2021 over the next twelve months.	[1]
[1]	The Company expects to recognize revenue on approximately 72% of backlog as of April 2, 2021 over the next twelve months.

Accounts Receivable, Net (Table

Accounts Receivable, Net (Tables)	3 Months Ended
	Apr. 02, 2021
Accounts Receivable, after Allowance for Credit Loss [Abstract]
Schedule of Accounts Receivable, Net	Accounts receivable, net consisted of the following: April 2, December 31, In thousands Trade receivables $ 22,353 $ 19,945 U.S. Government contracts: Billed 18,106 18,854 Cost and accrued profit - not billed 905 1,080 Commercial and other government contracts Billed 58,428 111,794 Cost and accrued profit - not billed 4,141 4,141 Less allowance for doubtful accounts (1,605) (2,008) Accounts receivable, net $ 102,328 $ 153,806
Financing Receivable, Allowance for Credit Loss [Table Text Block]	The following table summarizes the activity in the allowance for doubtful accounts in the three-month fiscal period ended April 2, 2021: In thousands Balance at December 31, 2020 $ (2,008) Provision (173) Amounts written off 301 Recoveries 273 Changes in foreign currency exchange rates 2 Balance at April 2, 2021 $ (1,605)
Accounts Receivable Due to Contract Changes, Negotiated Settlements and Claims for Unanticipated Cost	Accounts receivable, net includes amounts for matters such as contract changes, negotiated settlements and claims for unanticipated contract costs. These amounts are as follows: April 2, December 31, In thousands Contract changes, negotiated settlements and claims for unanticipated contract costs $ 900 $ 900

Contract Assets, Contract Cos_2

Contract Assets, Contract Costs and Contract Liabilities (Tables)	3 Months Ended
	Apr. 02, 2021
Revenue from Contract with Customer [Abstract]
Activity Related to Contract Assets, Contract Costs, and Contract Liabilities	Activity related to contract assets, contract costs and contract liabilities was as follows: April 2, December 31, 2020 $ Change % Change In thousands Contract assets $ 114,601 $ 108,645 $ 5,956 5.5 % Contract costs, current portion $ 5,050 $ 3,511 $ 1,539 43.8 % Contract costs, noncurrent portion $ 7,205 $ 8,311 $ (1,106) (13.3) % Contract liabilities, current portion $ 32,622 $ 39,073 $ (6,451) (16.5) % Contract liabilities, noncurrent portion $ 12,120 $ 11,019 $ 1,101 10.0 % Contract assets includes amounts for matters such as contract changes, negotiated settlements and claims for unanticipated contract costs. These amounts were as follows: April 2, December 31, In thousands Contract changes, negotiated settlements and claims for unanticipated contract costs $ 3,184 $ 3,178

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	3 Months Ended
	Apr. 02, 2021
Fair Value Disclosures [Abstract]
Schedule of Fair Value of Financial Instruments That Are Not Carried At Fair Value	The following table presents the carrying value and fair value of financial instruments that are not carried at fair value: April 2, 2021 December 31, 2020 Carrying Value Fair Value Carrying Value Fair Value In thousands Debt (1) $ 189,657 $ 216,525 $ 188,919 $ 230,093 (1) These amounts are classified within Level 2.

Inventories (Tables)

Inventories (Tables)	3 Months Ended
	Apr. 02, 2021
Inventory Disclosure [Abstract]
Schedule of Inventory	Inventories consisted of the following: April 2, December 31, In thousands Raw materials $ 19,363 $ 19,502 Contracts and other work in process (including certain general stock materials) 141,866 129,241 Finished goods 36,074 36,329 Inventories $ 197,303 $ 185,072
Inventory Due to Contract Changes, Negotiated Settlements and Claims for Unanticipated Contract Costs	Inventories include amounts associated with matters such as contract changes, negotiated settlements and claims for unanticipated contract costs. These amounts were as follows: April 2, December 31, In thousands Contract changes, negotiated settlements and claims for unanticipated contract costs $ 500 $ 500

Goodwill and Other Intangible_2

Goodwill and Other Intangible Assets, Net (Tables)	3 Months Ended
	Apr. 02, 2021
Intangible Assets, Net (Including Goodwill) [Abstract]
Schedule of Goodwill	The following table sets forth the change in the carrying amount of goodwill for continuing operations: In thousands Gross balance at December 31, 2020 $ 313,803 Accumulated impairment (66,559) Net balance at December 31, 2020 247,244 Additions — Impairments — Foreign currency translation (3,556) Ending balance at April 2, 2021 $ 243,688
Schedule of Acquired Finite-Lived Intangible Assets by Major Class	Other intangible assets consisted of: At April 2, At December 31, 2021 2020 Amortization Gross Accumulated Gross Accumulated In thousands Customer lists / relationships 6-38 years $ 127,974 $ (31,205) $ 128,882 $ (30,094) Developed technologies 7-20 years 45,458 (10,581) 45,798 (9,665) Trademarks / trade names 15-40 years 17,152 (2,242) 17,353 (2,149) Non-compete agreements and other 1-15 years 4,681 (4,668) 5,290 (5,276) Patents 17 years 523 (466) 523 (464) Total $ 195,788 $ (49,162) $ 197,846 $ (47,648)

Pension Plans (Tables)

Pension Plans (Tables)	3 Months Ended
	Apr. 02, 2021
Defined Benefit Plans and Other Postretirement Benefit Plans Disclosures [Abstract]
Schedule of Net Benefit Costs	Components of net pension cost for the Qualified Pension Plan and Supplemental Employees’ Retirement Plan ("SERP") were as follows: For the Three Months Ended Qualified Pension Plan SERP April 2, April 3, April 2, April 3, In thousands Service cost $ 1,300 $ 1,309 $ — $ — Interest cost on projected benefit obligation 3,525 5,255 15 41 Expected return on plan assets (11,275) (10,796) — — Amortization of net loss 1,075 1,201 17 236 Net pension (income) cost $ (5,375) $ (3,031) $ 32 $ 277

Computation of Earnings Per S_2

Computation of Earnings Per Share (Tables)	3 Months Ended
	Apr. 02, 2021
Earnings Per Share Reconciliation [Abstract]
Schedule of Earnings Per Share, Basic and Diluted	For the Three Months Ended April 2, April 3, In thousands, except per share amounts Earnings (loss) from continuing operations $ 7,984 $ (407) Total earnings from discontinued operations — 692 Net earnings (loss) $ 7,984 $ 285 Basic: Weighted average number of shares outstanding 27,815 27,809 Earnings (loss) per share from continuing operations $ 0.29 $ (0.01) Earnings per share from discontinued operations 0.00 0.02 Basic earnings (loss) per share $ 0.29 $ 0.01 Diluted: Weighted average number of shares outstanding 27,815 27,809 Weighted average shares issuable on exercise of dilutive stock options 52 82 Total 27,867 27,891 Earnings (loss) per share from continuing operations $ 0.29 $ (0.01) Earnings per share from discontinued operations 0.00 0.02 Diluted earnings (loss) per share $ 0.29 $ 0.01

Share-based Arrangements (Table

Share-based Arrangements (Tables)	3 Months Ended
	Apr. 02, 2021
Share-based Payment Arrangement, Noncash Expense [Abstract]
Stock Option Activity	Stock option activity was as follows: For the Three Months Ended April 2, 2021 Options Weighted - average Options outstanding at beginning of period 772,625 $ 54.87 Granted 4,990 $ 55.85 Exercised (11,095) $ 38.74 Forfeited or expired — $ — Options outstanding at April 2, 2021 766,520 $ 55.11
Fair Value Assumptions	The fair value of each option award is estimated on the date of grant using the Black-Scholes option valuation model. The following table indicates the weighted-average assumptions used in estimating fair value: For the Three Months Ended April 2, April 3, Expected option term (years) 4.9 4.9 Expected volatility 35.7 % 20.2 % Risk-free interest rate 0.5 % 1.4 % Expected dividend yield 1.6 % 1.3 % Per share fair value of options granted $14.89 $10.74
Restricted Stock Award and Restricted Stock Unit Activity	Restricted stock award and restricted stock unit activity were as follows: For the Three Months Ended April 2, 2021 Restricted Stock Weighted- Restricted Stock outstanding at beginning of period 109,514 $ 53.66 Granted 66,975 $ 55.88 Vested (26,151) $ 57.56 Forfeited or expired — $ — Restricted Stock outstanding at April 2, 2021 150,338 $ 53.97
Share-based Payment Arrangement, Performance Shares, Activity	Performance stock unit activity was as follows: For the Three Months Ended April 2, 2021 Performance Stock Weighted- Performance Stock outstanding at beginning of period — $ — Granted (1) 82,460 $ 70.17 Vested — $ — Forfeited or expired — $ — Performance Stock outstanding at April 2, 2021 82,460 $ 70.17 (1) The PSUs granted in the first quarter of 2021 assumed a 100% achievement level.
Schedule of Share-based Payment Awards, Performance Shares, Valuation Assumptions	The following table indicates the weighted-average assumptions used in estimating fair value: For the Three Months Ended April 2, 2021 Expected term (years) 2.9 Expected volatility 41.3 % Risk-free interest rate 0.2 % Expected dividend yield 1.4 % Per share fair value of performance stock granted $ 84.49

Shareholders' Equity and Accu_2

Shareholders' Equity and Accumulated Other Comprehensive Income (Tables)	3 Months Ended
	Apr. 02, 2021
Stockholders' Equity Note [Abstract]
Schedule of Stockholders Equity	Changes in shareholders’ equity for the three-month fiscal periods ended April 2, 2021, and April 3, 2020, were as follows: For the Three Months Ended April 2, April 3, In thousands Beginning balance $ 746,438 $ 823,202 Comprehensive income (loss) 24,339 (9,434) Dividends declared (per share of common stock, $0.20 and $0.20, respectively) (5,562) (5,555) Employee stock plans and related tax benefit 880 1,455 Purchase of treasury shares (344) (14,072) Share-based compensation expense 1,743 1,633 Impact of change in tax accounting standard (275) — Ending balance $ 767,219 $ 797,229
Schedule of Accumulated Other Comprehensive Income (Loss)	The components of accumulated other comprehensive income (loss) are shown below: For the Three Months Ended April 2, April 3, In thousands Foreign currency translation and other: Beginning balance $ (717) $ (16,351) Net loss on foreign currency translation (7,322) (10,826) Reclassification to net income (1) 22,835 — Other comprehensive income (loss), net of tax 15,513 (10,826) Ending balance $ 14,796 $ (27,177) Pension and other post-retirement benefits (2) : Beginning balance $ (130,104) $ (134,542) Amortization of net loss, net of tax expense of $250 and $330, respectively 842 1,107 Other comprehensive income, net of tax 842 1,107 Ending balance $ (129,262) $ (133,435) Total accumulated other comprehensive loss $ (114,466) $ (160,612) (1) The foreign currency translation reclassified to net income relates to the sale of the Company's UK Composites business. This balance was included in the loss accrual recorded in impairment on assets held for sale on the Company's Consolidated Statement of Operations in the year ended December 31, 2020 (see Note 3, Disposals , for additional information). (2) These accumulated other comprehensive income components are included in the computation of net periodic pension cost. (See Note 13, Pension Plans for additional information.)

Income Taxes (Tables)

Income Taxes (Tables)	3 Months Ended
	Apr. 02, 2021
Income Tax Disclosure [Abstract]
Schedule of Effective Income Tax Rates	For the Three Months Ended April 2, April 3, Effective Income Tax Rate from continuing operations 2.5 % 52.1 %

Basis of Presentation Basis o_2

Basis of Presentation Basis of Presentation (Details) $ in Millions	Aug. 26, 2019USD ($)
Basis of Presentation [Abstract]
Disposal Group, Including Discontinued Operation, Consideration	$ 700

Recent Accounting Standards (De

Recent Accounting Standards (Details) - USD ($) $ in Thousands	3 Months Ended
	Apr. 02, 2021	Apr. 03, 2020
Accounting Policies [Abstract]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]	$ (275)	$ 0

Disposals (Details)

Disposals (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended	15 Months Ended	19 Months Ended
	Apr. 02, 2021	Apr. 03, 2020	Dec. 31, 2020	Apr. 02, 2021	Apr. 02, 2021	Feb. 02, 2021	Aug. 26, 2019
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Disposal Group, Including Discontinued Operation, Consideration							$ 700,000
Costs of Transaction Services Agreement	$ 705	$ 4,140			$ 17,900
Income from Transaction Services Agreement	475	2,974			12,600
Proceeds from Divestiture of Businesses	0	5,223
Assets	1,250,737		$ 1,306,393	$ 1,250,737	1,250,737
Discontinued Operation, Income (Loss) from Discontinued Operation During Phase-out Period, Net of Tax	0	0
Discontinued Operation, Gain (Loss) from Disposal of Discontinued Operation, before Income Tax		900
Discontinued Operation, Tax Effect of Gain (Loss) from Disposal of Discontinued Operation		200
Discontinued Operation, Gain (Loss) on Disposal of Discontinued Operation, Net of Tax	0	692
Earnings from discontinued operations, net of tax	0	692
Gain (Loss) on Disposition of Business	(234)	493
UK Composites
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from Divestiture of Businesses	3,600
Assets						$ 23,460
Liabilities						6,618
Net Assets						16,842
Accumulated Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Net of Tax						$ 22,835
Legal Fees	442
Gain (Loss) on Disposition of Business	200		36,300	$ 36,519
Disposal Group, Including Discontinued Operation, Cash and Cash Equivalents			$ 6,600
Cash Outflows [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Discontinued Operation, Amount of Continuing Cash Flows after Disposal	0	300			8,100
Cash Inflows [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Discontinued Operation, Amount of Continuing Cash Flows after Disposal	$ 500	$ 7,900			$ 17,400

Business Combinations (Details)

Business Combinations (Details) $ in Millions	Jan. 03, 2020USD ($)
Bal Seal [Member]
Acquired Indefinite-lived Intangible Assets [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net	$ 317.5

Business Combinations Retention

Business Combinations Retention Plans (Details) - USD ($) $ in Thousands	Apr. 02, 2021	Dec. 31, 2020	Jan. 03, 2020
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]
Restricted Cash, Current	$ 0	$ 25,121
Bal Seal [Member]
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]
Restricted Cash, Current			$ 24,700

Revenue (Details)

Revenue (Details) - USD ($) $ in Thousands	3 Months Ended
	Apr. 02, 2021	Apr. 03, 2020
Disaggregation of Revenue [Line Items]
Net sales	$ 171,616	$ 207,322
Revenue, Net, Percentage	100.00%	100.00%
Transferred over Time [Member]
Disaggregation of Revenue [Line Items]
Revenue, Net, Percentage	35.00%	32.00%
Transferred at Point in Time [Member]
Disaggregation of Revenue [Line Items]
Revenue, Net, Percentage	65.00%	68.00%
Military and Defense, other than fuzes [Member]
Disaggregation of Revenue [Line Items]
Net sales	$ 43,611	$ 48,757
Missile and Bomb Fuzes [Member]
Disaggregation of Revenue [Line Items]
Net sales	$ 41,586	$ 58,000
Revenue, Net, Percentage	24.00%	28.00%
Commercial Aerospace [Member]
Disaggregation of Revenue [Line Items]
Net sales	$ 47,958	$ 63,257
Medical [Member]
Disaggregation of Revenue [Line Items]
Net sales	20,583	20,976
Other [Member]
Disaggregation of Revenue [Line Items]
Net sales	$ 17,878	$ 16,332
Original Equipment Manufacturer [Member]
Disaggregation of Revenue [Line Items]
Revenue, Net, Percentage	63.00%	61.00%
Aftermarket [Member]
Disaggregation of Revenue [Line Items]
Revenue, Net, Percentage	13.00%	11.00%

Revenue Changes in Revenue due

Revenue Changes in Revenue due to Estimates in Over Time Contracts (Details) - USD ($) $ in Thousands	3 Months Ended
	Apr. 02, 2021	Apr. 03, 2020
Change in Accounting Estimate [Line Items]
Net sales	$ 171,616	$ 207,322
Performance obligations satisfied in previous periods [Member]
Change in Accounting Estimate [Line Items]
Reductions in Revenues		$ (1,115)
Increase in Revenue	$ 2,865

Revenue Unfulfilled Performance

Revenue Unfulfilled Performance Obligations (Details) - USD ($) $ in Thousands	Apr. 02, 2021	Dec. 31, 2020
Unfulfilled Performance Obligations [Abstract]
Revenue, Remaining Performance Obligation, Amount	$ 562,407	$ 631,236
Revenue, Remaining Performance Obligation, Percentage	72.00%

Restructuring Costs (Details)

Restructuring Costs (Details) - USD ($) $ in Thousands	3 Months Ended
	Apr. 02, 2021	Apr. 03, 2020
Restructuring Cost and Reserve [Line Items]
Restructuring and severance costs	$ 1,352	$ 1,795
Severance costs	1,400
Bal Seal [Member]
Restructuring Cost and Reserve [Line Items]
Severance costs	500
G&A Reduction Effort [Member]
Restructuring Cost and Reserve [Line Items]
Severance costs	$ 1,300

Accounts Receivable, Net - Sche

Accounts Receivable, Net - Schedule of Accounts Receivable, Net (Details) - USD ($) $ in Thousands	Apr. 02, 2021	Dec. 31, 2020
Accounts, Notes, Loans and Financing Receivable [Line Items]
Less allowance for doubtful accounts	$ (1,605)	$ (2,008)
Accounts receivable, net	102,328	153,806
Accounts Receivable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable	22,353	19,945
U.S. Government contracts | Billed | Accounts Receivable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable	18,106	18,854
U.S. Government contracts | Not billed | Accounts Receivable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable	905	1,080
Commercial and other government contracts | Billed | Accounts Receivable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable	58,428	111,794
Commercial and other government contracts | Not billed | Accounts Receivable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable	$ 4,141	$ 4,141

Accounts Receivable, Net Allowa

Accounts Receivable, Net Allowance for Doubtful Accounts (Details) - USD ($) $ in Thousands	3 Months Ended
	Apr. 02, 2021	Dec. 31, 2020
Allowance for Doubtful Accounts [Abstract]
Less allowance for doubtful accounts	$ (1,605)	$ (2,008)
Provision for Other Credit Losses	(173)
Accounts Receivable, Allowance for Credit Loss, Writeoff	301
Accounts Receivable, Allowance for Credit Loss, Recovery	273
Financing Receivable, Allowance for Credit Loss, Foreign Currency Translation	$ 2

Accounts Receivable, Net - Acco

Accounts Receivable, Net - Accounts Receivable due to contract changes, negotiated settlements and claims for unanticipated cost (Details) - USD ($) $ in Thousands	Apr. 02, 2021	Dec. 31, 2020
Accounts Receivable, after Allowance for Credit Loss [Abstract]
Contract changes, negotiated settlements and claims for unanticipated contract costs	$ 900	$ 900

Contract Assets, Contract Cos_3

Contract Assets, Contract Costs and Contract Liabilities (Details) - USD ($)	3 Months Ended
	Apr. 02, 2021	Apr. 03, 2020	Dec. 31, 2020
Disaggregation of Revenue [Line Items]
Contract assets	$ 114,601,000		$ 108,645,000
Contract assets, change	$ 5,956,000
Contract assets, change (as percent)	5.50%
Contract costs, current portion	$ 5,050,000		3,511,000
Capitalized costs, current portion, change	$ 1,539,000
Capitalized costs, current portion, change (as percent)	43.80%
Contract costs, noncurrent portion	$ 7,205,000		8,311,000
Capitalized costs, noncurrent portion, change	$ (1,106,000)
Capitalized costs, noncurrent portion, change (as percent)	(13.30%)
Contract liabilities, current portion	$ 32,622,000		39,073,000
Contract liabilities, current portion, change	$ (6,451,000)
Contract liabilities, current portion, change (as percent)	(16.50%)
Contract liabilities, noncurrent portion	$ 12,120,000		11,019,000
Contract liabilities, noncurrent portion, change	$ 1,101,000
Contract liabilities, noncurrent portion, change (as percent)	10.00%
Impairment loss	$ 0	$ 0
Capitalized contract cost, amortization	1,900,000	2,500,000
Revenue recognized related to contract liabilities	9,400,000	$ 14,700,000
Contract changes, negotiated settlements and claims for unanticipated contract costs
Disaggregation of Revenue [Line Items]
Contract assets	3,184,000		3,178,000
Costs to Fulfill [Member]
Disaggregation of Revenue [Line Items]
Capitalized Contract Cost, Net	10,300,000		9,300,000
Costs to Obtain [Member]
Disaggregation of Revenue [Line Items]
Capitalized Contract Cost, Net	$ 2,000,000		$ 2,500,000

Fair Value Measurements - Fair

Fair Value Measurements - Fair Value of Financial Instruments not carried at Fair Value (Details) - USD ($) $ in Thousands	Apr. 02, 2021	Dec. 31, 2020
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Money Market Funds, at Carrying Value	$ 93,500	$ 51,500
Level 2 | Carrying Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt	189,657	188,919
Level 2 | Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt	$ 216,525	$ 230,093

Inventories - Schedule of Inven

Inventories - Schedule of Inventory (Details) - USD ($) $ in Thousands	Apr. 02, 2021	Dec. 31, 2020
Inventory Disclosure [Abstract]
Raw materials	$ 19,363	$ 19,502
Contracts and other work in process (including certain general stock materials)	141,866	129,241
Finished goods	36,074	36,329
Inventories	$ 197,303	$ 185,072

Inventories - Inventory Due to

Inventories - Inventory Due to Contract Changes, Negotiated Settlements and Claims for Unanticipated Contract Costs (Details) - USD ($) $ in Thousands	Apr. 02, 2021	Dec. 31, 2020
Inventory Disclosure [Abstract]
Contract changes, negotiated settlements and claims for unanticipated contract costs	$ 500	$ 500

Inventories - Other Inventory I

Inventories - Other Inventory Information (Details) - USD ($) $ in Thousands	Apr. 02, 2021	Dec. 31, 2020
Schedule of Inventory [Line Items]
Inventories	$ 197,303	$ 185,072
K-MAX®
Schedule of Inventory [Line Items]
Inventory, gross	61,400	60,400
Inventory noncurrent	24,500
SH 2GA Super Seasprite Program
Schedule of Inventory [Line Items]
Inventory, gross	6,100	$ 6,300
Inventory noncurrent	$ 5,100

Goodwill and Other Intangible_3

Goodwill and Other Intangible Assets, Net - Carrying Amount of Goodwill (Details) - USD ($) $ in Thousands	3 Months Ended
	Apr. 02, 2021	Apr. 02, 2021	Dec. 31, 2020
Goodwill [Roll Forward]
Gross balance at beginning of period			$ 313,803
Accumulated impairment			(66,559)
Net balance at beginning of period	$ 247,244
Additions	0
Impairments	0
Foreign currency translation	(3,556)
Net balance at end of period	$ 247,244	$ 243,688	$ 247,244

Goodwill and Other Intangible_4

Goodwill and Other Intangible Assets, Net - Other Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended
	Apr. 02, 2021	Dec. 31, 2020
Finite-Lived Intangible Assets [Line Items]
Gross Amount	$ 195,788	$ 197,846
Accumulated Amortization	(49,162)	(47,648)
Customer lists / relationships
Finite-Lived Intangible Assets [Line Items]
Gross Amount	127,974	128,882
Accumulated Amortization	(31,205)	(30,094)
Developed technologies
Finite-Lived Intangible Assets [Line Items]
Gross Amount	45,458	45,798
Accumulated Amortization	(10,581)	(9,665)
Trademarks / trade names
Finite-Lived Intangible Assets [Line Items]
Gross Amount	17,152	17,353
Accumulated Amortization	(2,242)	(2,149)
Non-compete agreements and other
Finite-Lived Intangible Assets [Line Items]
Gross Amount	4,681	5,290
Accumulated Amortization	$ (4,668)	(5,276)
Patents
Finite-Lived Intangible Assets [Line Items]
Amortization Period	17 years
Gross Amount	$ 523	523
Accumulated Amortization	$ (466)	$ (464)
Minimum | Customer lists / relationships
Finite-Lived Intangible Assets [Line Items]
Amortization Period	6 years
Minimum | Developed technologies
Finite-Lived Intangible Assets [Line Items]
Amortization Period	7 years
Minimum | Trademarks / trade names
Finite-Lived Intangible Assets [Line Items]
Amortization Period	15 years
Minimum | Non-compete agreements and other
Finite-Lived Intangible Assets [Line Items]
Amortization Period	1 year
Maximum | Customer lists / relationships
Finite-Lived Intangible Assets [Line Items]
Amortization Period	38 years
Maximum | Developed technologies
Finite-Lived Intangible Assets [Line Items]
Amortization Period	20 years
Maximum | Trademarks / trade names
Finite-Lived Intangible Assets [Line Items]
Amortization Period	40 years
Maximum | Non-compete agreements and other
Finite-Lived Intangible Assets [Line Items]
Amortization Period	15 years

Pension Plans - Pension plan ne

Pension Plans - Pension plan net periodic benefit costs (Details) - USD ($) $ in Thousands	3 Months Ended
	Apr. 02, 2021	Apr. 03, 2020
Qualified Pension Plan
Defined Benefit Plan Disclosure
Service cost	$ 1,300	$ 1,309
Interest cost on projected benefit obligation	3,525	5,255
Expected return on plan assets	(11,275)	(10,796)
Amortization of net loss	1,075	1,201
Net pension (income) cost	(5,375)	(3,031)
SERP
Defined Benefit Plan Disclosure
Service cost	0	0
Interest cost on projected benefit obligation	15	41
Expected return on plan assets	0	0
Amortization of net loss	17	236
Net pension (income) cost	$ 32	$ 277

Pension Plans - Contributions (

Pension Plans - Contributions (Details) - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Apr. 05, 2021	Apr. 02, 2021	Dec. 31, 2020
Qualified Pension Plan
Defined Benefit Plans and Other Postretirement Benefit Plans
Contributions paid-to-date			$ 10
Expected future contributions		$ 0
Qualified Pension Plan | Subsequent Event [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans
Contributions paid-to-date	$ 10
SERP
Defined Benefit Plans and Other Postretirement Benefit Plans
Contributions paid-to-date		0.1	$ 0.5
Expected future contributions		$ 2.6

Commitments and Contingencies (

Commitments and Contingencies (Details) - USD ($) $ in Millions	3 Months Ended
	Apr. 02, 2021	Jan. 15, 2018
Offset Agreement
Loss Contingencies [Line Items]
Notional amount	$ 194
Notional Value of Contract, Percent		60.00%
Contractual Obligation		$ 324
Estimate of possible loss	16.5
Contract with Customer, Liability	12.1
New Hartford
Loss Contingencies [Line Items]
Estimate of environmental remediation cost	2.3
Payments for environmental remediation	1.7
New Hartford | Other accruals and payables
Loss Contingencies [Line Items]
Estimate of environmental remediation cost	0.1
New Hartford | Accruals and payables and other long-term liabilties
Loss Contingencies [Line Items]
Estimate of environmental remediation cost	0.6
Bloomfield
Loss Contingencies [Line Items]
Estimate of environmental remediation cost	2.4
Payments for environmental remediation	14.5
Environmental liability	10.3
Estimated remediation liability	$ 20.8
Discount rate (as a percent)	8.00%
Bloomfield | Other accruals and payables
Loss Contingencies [Line Items]
Estimate of environmental remediation cost	$ 0.6
Pension Costs
Loss Contingencies [Line Items]
Accrual for claims	$ 0.3

Computation of Earnings Per S_3

Computation of Earnings Per Share - Schedule of Earnings Per Share, Basic and Diluted (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Apr. 02, 2021	Apr. 03, 2020
Earnings Per Share Reconciliation [Abstract]
Earnings from continuing operations	$ 7,984	$ (407)
Earnings from discontinued operations, net of tax	0	692
Net earnings	$ 7,984	$ 285
Basic:
Weighted average number of shares outstanding (in shares)	27,815	27,809
Basic earnings per share from continuing operations	$ 0.29	$ (0.01)
Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Basic Share	0	0.02
Basic earnings per share (in usd per share)	$ 0.29	$ 0.01
Diluted:
Weighted average shares issuable on exercise of dilutive stock options (in shares)	52	82
Diluted (in shares)	27,867	27,891
Diluted earnings per share from continuing operations	$ 0.29	$ (0.01)
Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Diluted Share	0	0.02
Diluted earnings per share (in usd per share)	$ 0.29	$ 0.01

Computation of Earnings Per S_4

Computation of Earnings Per Share - Narrative (Details) - shares	3 Months Ended
	Apr. 02, 2021	Apr. 03, 2020
Stock Compensation Plan
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Antidilutive securities excluded from EPS	440,959	443,379

Share-based Arrangements - Comp

Share-based Arrangements - Compensation Arrangements by Share-based Payment Award (Details) - USD ($) $ in Thousands	3 Months Ended
	Apr. 02, 2021	Apr. 03, 2020
Share-based Compensation Arrangement by Share-based Payment Award
Stock compensation expense	$ 1,743	$ 1,633
Selling, General and Administrative Expenses [Member]
Share-based Compensation Arrangement by Share-based Payment Award
Stock compensation expense		$ 1,600

Share-based Arrangements - Stoc

Share-based Arrangements - Stock Options Activity (Details) - Stock Options - $ / shares	3 Months Ended
	Apr. 02, 2021	Apr. 03, 2020	Dec. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Outstanding at beginning of the period (in shares)	772,625
Granted (in shares)	4,990
Exercised (in shares)	(11,095)
Forfeited or expired (in shares)	0
Outstanding at end of period (in shares)	766,520
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract]
Options outstanding at beginning of period, Weighted-average exercise price (in usd per share)	$ 55.11		$ 54.87
Granted, Weighted-average exercise price (in usd per share)	55.85
Exercised, Weighted-average exercise price (in usd per share)	38.74
Forfeited or expired, Weighted average exercise price (in usd per share)	0
Options outstanding end of period, Weighted-average exercise price (in usd per share)	$ 55.11		$ 54.87
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Expected option term	4 years 10 months 24 days	4 years 10 months 24 days
Expected volatility	35.70%	20.20%
Risk-free interest rate	0.50%	1.40%
Expected dividend yield	1.60%	1.30%
Per share fair value of options granted (in usd per share)	$ 14.89	$ 10.74

Share-based Arrangements - Rest

Share-based Arrangements - Restricted Stock Activity (Details) - Restricted Stock Awards	3 Months Ended
	Apr. 02, 2021$ / sharesshares
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Restricted Stock outstanding at beginning of the period (in shares) | shares	109,514
Granted (in shares) | shares	66,975
Vested (in shares) | shares	(26,151)
Forfeited or expired (in shares) | shares	0
Restricted Stock outstanding at end of period (in shares) | shares	150,338
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]
Restricted Stock outstanding at beginning of period, Weighted-average grant date fair value (usd per share) | $ / shares	$ 53.66
Granted, Weighted Average Grant Date Fair Value (usd per share) | $ / shares	55.88
Vested, Weighted Average Grant Date Fair Value (usd per share) | $ / shares	57.56
Forfeited or expired, Weighted Average Grant Date Fair Value (usd per share) | $ / shares	0
Restricted Stock outstanding at end of period Weighted-average grant date fair value (usd per share) | $ / shares	$ 53.97

Share-based Arrangements Perfor

Share-based Arrangements Performance Shares (Details) - $ / shares	3 Months Ended
	Apr. 02, 2021	Apr. 03, 2020	Dec. 31, 2020
Share-based Payment Arrangement [Abstract]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage	100.00%
Share-based Compensation Arrangement by Share-based Payment Award
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage	100.00%
Minimum
Share-based Payment Arrangement [Abstract]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage	0.00%
Share-based Compensation Arrangement by Share-based Payment Award
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage	0.00%
Maximum
Share-based Payment Arrangement [Abstract]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage	200.00%
Share-based Compensation Arrangement by Share-based Payment Award
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage	200.00%
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award
Expected option term	4 years 10 months 24 days	4 years 10 months 24 days
Expected volatility	35.70%	20.20%
Risk-free interest rate	0.50%	1.40%
Expected dividend yield	1.60%	1.30%
Per share fair value of options granted (in usd per share)	$ 14.89	$ 10.74
Restricted Stock Awards
Share-based Compensation Arrangement by Share-based Payment Award
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number	150,338		109,514
Granted (in shares)	66,975
Vested (in shares)	(26,151)
Forfeited or expired (in shares)	0
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value	$ 53.97		$ 53.66
Granted, Weighted Average Grant Date Fair Value (usd per share)	55.88
Vested, Weighted Average Grant Date Fair Value (usd per share)	57.56
Forfeited or expired, Weighted Average Grant Date Fair Value (usd per share)	$ 0
Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number	82,460		0
Granted (in shares)	82,460
Vested (in shares)	0
Forfeited or expired (in shares)	0
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value	$ 70.17		$ 0
Granted, Weighted Average Grant Date Fair Value (usd per share)	70.17
Vested, Weighted Average Grant Date Fair Value (usd per share)	0
Forfeited or expired, Weighted Average Grant Date Fair Value (usd per share)	$ 0
Expected option term	2 years 10 months 24 days
Expected volatility	41.30%
Risk-free interest rate	0.20%
Expected dividend yield	1.40%
Per share fair value of options granted (in usd per share)	$ 84.49

Shareholders' Equity and Accu_3

Shareholders' Equity and Accumulated Other Comprehensive Income - Changes in Shareholders' Equity (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Apr. 02, 2021	Apr. 03, 2020
Schedule of Capitalization, Equity [Line Items]
Common Stock, Dividends, Per Share, Declared	$ 0.20	$ 0.20
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	$ 746,438	$ 823,202
Comprehensive income (loss)	24,339	(9,434)
Dividends declared (per share of common stock, $0.20 and $0.20, respectively)	(5,562)	(5,555)
Employee stock plans and related tax benefit	880	1,455
Purchase of treasury shares	(344)	(14,072)
Share-based compensation expense	1,743	1,633
New Accounting Pronouncements or Change in Accounting Principle [Line Items]	(275)	0
Ending balance	$ 767,219	$ 797,229

Shareholders' Equity and Accu_4

Shareholders' Equity and Accumulated Other Comprehensive Income - Accumulated Other Comprehensive Income (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Apr. 02, 2021	Apr. 03, 2020
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Reclassification Adjustment from AOCI, Realized upon Sale or Liquidation, Net of Tax	$ 22,835	$ 0
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	746,438	823,202
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	(7,322)	(10,826)
Other comprehensive income (loss)	16,355	(9,719)
Ending balance	767,219	797,229
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, Tax	$ 250	$ 330
Common Stock, Dividends, Per Share, Declared	$ 0.20	$ 0.20
Total accumulated other comprehensive loss
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Ending balance	$ (114,466)	$ (160,612)
Foreign currency translation
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(717)	(16,351)
Other comprehensive income (loss)	15,513	(10,826)
Ending balance	14,796	(27,177)
Pension and other post-retirement benefits
Accumulated Other Comprehensive Income (Loss) [Line Items]
Reclassification from AOCI, Current Period, Net of Tax, Attributable to Parent	842	1,107
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(130,104)	(134,542)
Other comprehensive income (loss)	842	1,107
Ending balance	$ (129,262)	$ (133,435)

Income Taxes - Effective Income

Income Taxes - Effective Income Tax Rate (Details)	3 Months Ended
	Apr. 02, 2021	Apr. 03, 2020
Income Tax Disclosure [Abstract]
Effective Income Tax Rate from continuing operations	2.50%	52.10%

Income Taxes (Details)

Income Taxes (Details) $ in Millions	Apr. 02, 2021USD ($)
Income Tax Disclosure [Abstract]
Deferred Tax Assets, Gross	$ 35.1
Deferred tax assets to be realized	30.3
Deferred tax assets, valuation allowance	$ 4.8