Consolidated Statements of Comprehensive Loss - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Statement of Comprehensive Income [Abstract]
Net loss	$ (158,628)	$ (160,868)
Other comprehensive (loss) income:
Unrealized (loss) gain on available-for-sale securities, net of tax	(1,147)	303
Foreign currency translation adjustments	(66)	1,366
Other comprehensive (loss) income	(1,213)	1,669
Total comprehensive loss	$ (159,841)	$ (159,199)