Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Net income	$ 55,566	$ 29,528	$ 121,488	$ 76,402
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustments	6,936	(6,135)	5,072	(6,167)
Change in unrealized gain (loss) on available-for-sale securities, net of tax of $30, $(38), $(321) and $(200), respectively	(368)	234	2,888	1,671
Other comprehensive income (loss), net of tax	6,568	(5,901)	7,960	(4,496)
Comprehensive income	$ 62,134	$ 23,627	$ 129,448	$ 71,906