Condensed Consolidated Statements of Comprehensive Income (unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Condensed Consolidated Statements of Comprehensive Income (unaudited)
Net income	$ 59,031	$ 23,567	$ 94,603	$ 3,563
Other comprehensive income (loss):
Unrealized gain on available-for-sale securities, net of tax	12		12
Foreign currency translation adjustments, net of tax	(319)	(93)	289	(229)
Comprehensive income	$ 58,724	$ 23,474	$ 94,904	$ 3,334