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)	$ (53,342)	$ (35,584)	$ 9,388
Other comprehensive loss:
Unrealized loss on available-for-sale securities	(3)	0	(1)
Comprehensive income (loss)	$ (53,345)	$ (35,584)	$ 9,387