Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Statement of Comprehensive Income [Abstract]
Net (loss) income	$ (150,173)	$ 35,542
Other comprehensive gains, net of tax:
Foreign currency translation adjustments (Note 6)	11,194	5,892
Pension and post-retirement plan actuarial gains, net of tax (Note 6)	439	2,264
Unrealized gains (losses) on available-for-sale securities (Note 6)	2	(9)
Total other comprehensive gains, net of tax	11,635	8,147
Comprehensive (loss) income	$ (138,538)	$ 43,689