Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
CASH FLOWS FROM OPERATING ACTIVITIES:
Net (loss) earnings	$ (41,866)	$ 34,686	$ 36,146
Adjustments to reconcile net (loss) earnings to net cash provided by operating activities:
Depreciation and amortization	26,930	26,670	24,619
Pensions and other post-retirement plan expense	132,650	2,698	1,009
Stock-based compensation	6,105	3,417	5,015
Asset impairment charges	0	1,016	0
Restructuring non-cash charges	0	300	1,704
Deferred income taxes	(30,982)	(2,048)	2,413
Gain on sale of assets	0	0	(63)
(Gain) loss on foreign current hedges, net of tax	(35)	(20)	97
Changes in assets and liabilities, net of acquisitions:
Accounts receivable	(928)	(343)	3,784
Inventories	(3,570)	(578)	4,371
Operating lease assets	1,687	1,363	(2,578)
Other assets	(2,076)	3,701	(2,605)
Accounts payable	3,136	3,860	(4,658)
Accrued payroll and benefits	5,023	2,518	(5,940)
Operating lease liabilities	(1,709)	(1,257)	2,921
Accrued expenses and other liabilities	(7,937)	1,056	(1,543)
Pension and other post-retirement plans	(287)	(256)	(287)
Net cash provided by operating activities	86,141	76,783	64,405
CASH FLOWS FROM INVESTING ACTIVITIES:
Capital expenditures	(15,641)	(14,858)	(21,733)
Proceeds from sale of assets	0	0	137
Payments for acquisitions, net of cash acquired	(255)	(8,309)	(73,906)
Net cash used in investing activities	(15,896)	(23,167)	(95,502)
CASH FLOWS FROM FINANCING ACTVITIES:
Payments of long-term debt	(808,800)	(3,792,550)	(1,885,800)
Proceeds from borrowings of long-term debt	804,200	3,747,450	1,935,500
Purchase of treasury stock	(8,786)	(8,080)	(11,746)
Dividends paid	(5,173)	(5,179)	(5,238)
Taxes paid on behalf of equity award participants	(1,503)	(1,917)	(2,657)
Contingent consideration payments	(650)	(1,057)	0
Net cash (used in) provided by financing activities	(20,712)	(61,333)	30,059
Effect of exchange rate on cash and cash equivalents	159	(751)	346
Net increase (decrease) in cash and cash equivalents	49,692	(8,468)	(692)
Cash and cash equivalents at beginning of year	91,773	100,241	100,933
Cash and cash equivalents at end of year	141,465	91,773	100,241
Supplemental cash flow information:
Cash paid for interest	1,950	2,597	1,961
Cash paid for income taxes, net	16,887	11,967	11,113
Capital expenditures incurred not paid	$ 2,348	$ 729	$ 4,077