Net Loss and Net Loss Per Share - Summary of Computation of Basic and Diluted Net Loss Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Sep. 30, 2021	Sep. 30, 2020
Numerator:
Net loss attributable to common stockholders, basic and diluted	$ (12,606)	$ (8,399)	$ (5,852)	$ (1,135)	$ (293)	$ (398)	$ (26,857)	$ (1,826)
Denominator:
Weighted-average common shares outstanding	29,001,213			11,724,100			22,105,321	10,082,667
Net loss per share attributable to common stockholders:
Basic and diluted	$ (0.43)			$ (0.10)			$ (1.21)	$ (0.18)