Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 41,980	$ 145,523	$ (11,016)
Other comprehensive income (loss):
Net unrealized gain (loss) on investments, net of tax	(180)	(3)	602
Foreign currency translation adjustments	29	(1)	0
Total other comprehensive income (loss)	(151)	(4)	602
Comprehensive income (loss)	$ 41,829	$ 145,519	$ (10,414)