CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Cash flows from operating activities:
Net income	$ 17,349	$ 27,369
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	19,585	20,556
Amortization	1,706	1,748
Change in deferred taxes and other liabilities	3,578	(675)
Impairment of property, plant and equipment	473	49
Non-cash interest expense	256	256
Compensation and benefits paid or payable in Class A Common Stock	2,651	810
Provision for credit losses from uncollected receivables and contract assets	269	365
Foreign currency remeasurement loss/(gain) on intercompany loans	2,886	(792)
Fair value adjustment on foreign currency contracts	0	280
Changes in operating assets and liabilities that provided/(used) cash:
Accounts receivable	(20,713)	(17,061)
Contract assets	11,421	2,982
Inventories	(12,873)	1,917
Prepaid expenses and other current assets	(2,624)	(6,525)
Income taxes prepaid and receivable	(70)	(721)
Accounts payable	17,482	7,730
Accrued liabilities	(21,164)	(22,739)
Income taxes payable	(17,080)	(5,466)
Noncurrent receivables	(200)	(178)
Other noncurrent liabilities	(1,046)	506
Other, net	233	(814)
Net cash provided by operating activities	2,119	9,597
Cash flows from investing activities:
Purchases of property, plant and equipment	(15,597)	(26,859)
Purchased software	0	(21)
Net cash used in investing activities	(15,597)	(26,880)
Cash flows from financing activities:
Proceeds from borrowings	96,998	43,237
Principal payments on debt	(3,007)	(60,750)
Purchase of Treasury shares	(69,153)	0
Taxes paid in lieu of share issuance	(1,316)	(2,446)
Dividends paid	(8,431)	(8,110)
Net cash provided by/(used in) financing activities	15,091	(28,069)
Effect of exchange rate changes on cash and cash equivalents	2,458	(2,656)
Increase/(decrease) in cash and cash equivalents	4,071	(48,008)
Cash and cash equivalents at beginning of period	115,283	173,420
Cash and cash equivalents at end of period	$ 119,354	$ 125,412