CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Net income	$ 433,887	$ 451,295	$ 419,375
Other comprehensive income (loss):
Foreign currency translation adjustments	47,606	(3,002)	(24,535)
Comprehensive income	$ 481,493	$ 448,293	$ 394,840