Condensed Consolidated Statements of Comprehensive Income (Loss) (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
COMPREHENSIVE INCOME (LOSS):
Net income	$ 168,239	$ 110,598
Other comprehensive income (loss):
Foreign currency translation adjustments, net of tax	(968)	(8,837)
Foreign defined benefit plans, net of tax	16	40
Total other comprehensive income (loss)	(952)	(8,797)
Total comprehensive income (loss)	$ 167,287	$ 101,801