CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - UNAUDITED - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
CASH FLOWS FROM OPERATING ACTIVITIES:
Net (loss) earnings	$ (51,031)	$ 19,738
Adjustments to reconcile net (loss) earnings to net cash provided by operating activities:
Depreciation and amortization	20,231	19,819
Pension and other post-retirement plan expense	131,290	2,023
Stock-based compensation	4,106	2,164
Asset impairment charges		1,016
Restructuring non-cash charges		300
Deferred income taxes	(34,147)	(627)
Gain on foreign currency hedges, net of cash	(27)	(58)
Changes in assets and liabilities, net of acquisition:
Accounts receivable	2,587	2,085
Inventories	(5,190)	960
Operating lease assets	825	917
Other assets	(5,334)	2,446
Accounts payable	(1,792)	1,423
Accrued payroll and benefits	3,810	2,928
Operating lease liabilities	(841)	(818)
Accrued expenses and other liabilities	(4,100)	(4,826)
Pension and other post-retirement plans	(270)	(193)
Net cash provided by operating activities	60,117	49,297
CASH FLOWS FROM INVESTING ACTIVITIES:
Capital expenditures	(8,140)	(10,441)
Payments for acquisitions, net of cash acquired	(255)
Net cash used in investing activities	(8,395)	(10,441)
CASH FLOWS FROM FINANCING ACTIVITIES:
Payments of long-term debt	(597,200)	(3,322,550)
Proceeds from borrowings of long-term debt	592,600	3,329,150
Purchase of treasury stock	(4,939)	(8,080)
Dividends paid	(3,882)	(3,888)
Payments of contingent consideration	(500)
Taxes paid on behalf of equity award participants	(1,490)	(1,911)
Net cash used in financing activities	(15,411)	(7,279)
Effect of exchange rate changes on cash and cash equivalents	443	(78)
Net increase in cash and cash equivalents	36,754	31,499
Cash and cash equivalents at beginning of period	91,773	100,241
Cash and cash equivalents at end of period	128,527	131,740
Supplemental cash flow information:
Cash paid for interest	1,047	2,124
Cash paid for income taxes, net	10,246	8,295
Capital expenditures incurred but not paid	$ 1,153	$ 816