Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Statement Of Income And Comprehensive Income [Abstract]
Net income	$ 74,816	$ 52,522
Net cumulative translation adjustment and foreign currency exchange hedge, net of tax of $2,441 and $(452), respectively	(3,859)	1,118
Net unrealized gain on securities available-for-sale, net of tax of $(155) and $143, respectively	(491)	459
Comprehensive income	$ 70,466	$ 54,099