Condensed Consolidated Statements of Comprehensive Loss - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Statement of Comprehensive Income [Abstract]
Net loss	$ (37,137)	$ (31,294)	$ (72,510)	$ (57,354)
Other comprehensive gain (loss):
Foreign currency translation adjustment	(6)	(1)	(3)	(2)
Unrealized loss on available-for-sale securities	(60)	39	(256)	14
Comprehensive loss	$ (37,203)	$ (31,256)	$ (72,769)	$ (57,342)