CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Operating Activities:
Net income	$ 49,321	$ 85,002
Adjustments to reconcile net income to cash provided by operating activities:
Depreciation and amortization	34,352	31,121
Equity compensation expense	11,576	13,147
Deferred income taxes	(14,076)	(1,267)
Equity in undistributed income of unconsolidated joint ventures	(4,237)	(5,884)
Dividends received from unconsolidated joint ventures	4,677	4,965
Pension settlement charges (benefits)		534
Pension and other postretirement benefits	23	(300)
(Gain) loss on sale or disposal of property, plant and equipment	(15)	(673)
Impairment charges	212	385
UTIS fire fixed asset and inventory write-offs	199	1,254
Provision (benefit) for credit losses	331	(310)
Changes in assets and liabilities:
Accounts receivable	(23,759)	(32,254)
Proceeds from insurance/government subsidies related to operations	1,153	264
Contract assets	(9,320)	(6,136)
Inventories	(47,500)	(19,386)
Pension and postretirement benefit contributions	(141)	(156)
Other current assets	(4,919)	(144)
Accounts payable and other accrued expenses	(12,083)	27,495
Other, net	16,040	8,458
Net cash provided by operating activities	1,834	106,115
Investing Activities:
Acquisition of business, net of cash received	(1,300)	0
Capital expenditures	(87,000)	(43,411)
Proceeds from the sale of property, plant and equipment, net	0	714
Proceeds from insurance claims	7,252	0
Net cash used in investing activities	(81,048)	(42,697)
Financing Activities:
Proceeds from borrowings under revolving credit facility	100,000	0
Repayment of debt principal and finance lease obligations	(202)	(29,655)
Payments of taxes related to net share settlement of equity awards	(10,751)	(2,752)
Proceeds from issuance of shares to employee stock purchase plan	950	1,563
Net cash provided by (used in) financing activities	89,997	(30,844)
Effect of exchange rate fluctuations on cash	(6,618)	(3,458)
Net (decrease) increase in cash and cash equivalents	4,165	29,116
Cash and cash equivalents at beginning of period	232,296	191,785
Cash and cash equivalents at end of period	236,461	220,901
Supplemental Disclosures:
Accrued capital additions	9,330	6,447
Interest, net of amounts capitalized	5,491	1,285
Income taxes	$ 19,617	$ 25,867