Net Loss Per Share - Schedule of Computation of Basic and Diluted Net Loss Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Numerator:
Net loss	$ (13,723)	$ (7,849)
Cumulative dividends on redeemable convertible preferred stock	(1,228)	(715)
Net loss attributable to common stockholders	$ (14,951)	$ (8,564)
Denominator:
Weighted-average number of common shares outstanding, basic and diluted	22,263,994	145,016
Net loss per share attributable to common stockholders, basic and diluted	$ (0.67)	$ (59.06)