CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Statement Of Income And Comprehensive Income [Abstract]
Net loss		$ (123,249)	$ (91,581)	$ (73,859)
Other comprehensive loss:
Foreign currency translation gains (losses)	[1]	(4,794)	5,652	(157)
Total other comprehensive income (loss)	[1]	(4,794)	5,652	(157)
Total comprehensive loss		$ (128,043)	$ (85,929)	$ (74,016)

[1] Net of tax effect which was not material.