Condensed Consolidated Statements of Comprehensive Income (Loss) (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
COMPREHENSIVE INCOME (LOSS):
Net income	$ 75,749	$ 117,181	$ 211,860	$ 341,591
Foreign currency translation adjustments, net of tax	11,156	(10,011)	3,990	(9,762)
Total comprehensive income (loss)	$ 86,905	$ 107,170	$ 215,850	$ 331,829