CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Net income	$ 451,295	$ 419,375	$ 259,251
Other comprehensive (loss) income:
Foreign currency translation adjustments	(3,002)	(24,535)	19,808
Comprehensive income	$ 448,293	$ 394,840	$ 279,059