Net Loss Per Share Attributable to Common Stockholders - Summary of Computation of Net Loss Attributable To Common Stockholders (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 [Abstract]
Net loss attributable to common stockholders	$ (34,456)	$ (5,335)	$ (7,857)	$ (1,501)	$ (1,094)	$ (2,128)	$ (47,647)	$ (4,723)
Denominator [Abstract]
Weighted-average common shares used in computed net loss per share attributable to common stockholders basic and diluted	96,681,887			22,016,451			47,421,668	21,925,268
Net loss per share attributable to common stockholders, basic and diluted	$ (0.36)			$ (0.07)			$ (1.00)	$ (0.22)