Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
COMPREHENSIVE INCOME (LOSS):
Net income	$ 657,919	$ 598,626	$ 306,276
Other comprehensive income (loss):
Foreign currency translation adjustments, net of tax	(25,274)	(18,702)	18,973
Foreign defined benefit plan adjustments, net of tax	4,273	812	(3,719)
Total other comprehensive income (loss)	(21,001)	(17,890)	15,254
Total comprehensive income (loss)	$ 636,918	$ 580,736	$ 321,530