Net Loss Per Common Share - Schedule of Computation of Basic and Diluted Net Loss Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Earnings Per Share [Abstract]
Net loss attributable to common stockholders	$ (102,937)	$ (81,622)
Weighted-average shares outstanding	45,755	13,463
Less: weighted-average unvested restricted shares and shares subject to repurchase	(148)	(295)
Weighted-average shares used in computing net loss per share attributable to common stockholders, basic and diluted	45,607	13,168
Net loss per share attributable to common stockholders, basic and diluted	$ (2.26)	$ (6.20)