CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Statement of Comprehensive Income [Abstract]
Net income	$ 587,104	$ 480,483	$ 398,514
Foreign currency translation	(9,287)
Unrealized loss on available-for-sale debt securities, net of tax	(122)
Comprehensive income	$ 577,695	$ 480,483	$ 398,514