Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Statement of Comprehensive Income [Abstract]
Net income	$ 284,967	$ 58,583	$ 179,630
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustments (Note 7)	(42,462)	21,682	(19,453)
Pension and post-retirement plan actuarial gains, net of tax (Note 7)	31,262	7,683	6,961
Unrealized gains on available-for-sale securities (Note 7)	0	2	3
Reclassification of currency translation from accumulated other comprehensive loss into net income (Note 7)	(1,200)	101	2,912
Total other comprehensive (loss) income, net of tax	(12,400)	29,468	(9,577)
Comprehensive income	$ 272,567	$ 88,051	$ 170,053