CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Statement of Comprehensive Income [Abstract]
Net income (loss):	$ 13,723	$ (6,701)	$ 62,554	$ (8,746)
Unrealized net loss on available-for-sale securities, net of tax	(14)	(54)	(74)	(84)
Foreign currency translation	0	923	0	(1,141)
Comprehensive income (loss)	$ 13,709	$ (5,832)	$ 62,480	$ (9,971)