Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Net income	$ 55,169	$ 30,167	$ 100,582	$ 65,922
Other comprehensive income, net of tax:
Foreign currency translation adjustments	5,437	1,018	2,963	(1,864)
Change in unrealized gain (loss) on available-for-sale securities, net of tax of $21, $(406), $145 and $(351), respectively	(148)	4,909	(802)	3,256
Other comprehensive income, net of tax	5,289	5,927	2,161	1,392
Comprehensive income	$ 60,458	$ 36,094	$ 102,743	$ 67,314