Net Loss per Share Attributable to Common Stockholders - Computation of Basic and Diluted Net Loss per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Numerator
Net loss attributable to common stockholders, basic	$ (48,661)	$ (32,231)
Net loss attributable to common stockholders, diluted	$ (48,661)	$ (32,231)
Denominator
Weighted-average common stock outstanding (in shares)	36,406,507	10,341,809
Less: weighted-average common shares subject to repurchase (in shares)	(277,098)	(156,968)
Weighted-average shares used in computing net loss per share attributable to common stockholders, basic (in shares)	36,129,409	10,184,841
Weighted-average shares used in computing net loss per share attributable to common stockholders, diluted (in shares)	36,129,409	10,184,841
Net loss per share attributable to common stockholders, basic (in dollars per share)	$ (1.35)	$ (3.16)
Net loss per share attributable to common stockholders, diluted (in dollars per share)	$ (1.35)	$ (3.16)