UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Statement of Comprehensive Income [Abstract]
Net income	$ 19,976	$ 34,152	$ 29,553	$ 69,391
Other comprehensive income:
Foreign currency translation adjustment	(9,276)	0	(17,988)	0
Unrealized gains (losses) on marketable securities, net of tax	35	406	(69)	426
Comprehensive income	$ 10,735	$ 34,558	$ 11,496	$ 69,817