Consolidated Statements of Comprehensive Loss - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Statement Of Income And Comprehensive Income [Abstract]
Net loss	$ (130,323,000)	$ (63,412,000)
Other comprehensive gain (loss):
Foreign currency translation adjustment	(5,000)	9,000
Unrealized loss on available for sale securities	(98,000)	(6,000)
Comprehensive loss	$ (130,426,000)	$ (63,409,000)