Net Loss per Share - Computation (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Numerator:
Net loss	$ (31,232)	$ (33,804)	$ (93,199)	$ (88,644)
Denominator:
Weighted-average shares used to compute net loss per common share, Basic	49,107,639	47,987,184	48,971,329	45,705,782
Weighted-average shares used to compute net loss per common share, Diluted	49,107,639	47,987,184	48,971,329	45,705,782
Net loss per share, basic	$ (0.64)	$ (0.70)	$ (1.90)	$ (1.94)
Net loss per share, diluted	$ (0.64)	$ (0.70)	$ (1.90)	$ (1.94)