Net Loss Per Share - Summary of basis in Diluted Net Loss Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Numerator:
Net loss	$ (8,491)	$ (5,355)
Denominator:
Weighted-average common shares outstanding (in shares)	7,167,255	527,693
Less: Weighted-average unvested restricted shares and shares subject to repurchase	0	(20,243)
Weighted-average shares of common stock outstanding, diluted (in shares)	7,167,255	507,450
Weighted-average shares of common stock outstanding, basic (in shares)	7,167,255	507,450
Net loss per share of common stock, diluted (in dollars per share)	$ (1.18)	$ (10.55)
Net loss per share of common stock, basic (in dollars per share)	$ (1.18)	$ (10.55)