Net Loss per Share - Computation Of Basic And Diluted Net Loss Per Share Attributable To Common Stockholders (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Numerator:
Net loss - basic and diluted	$ (44,272)	$ (42,072)	$ (130,722)	$ (130,574)
Denominator:
Weighted-average common shares outstanding - basic	113,894,188	84,948,837	100,683,322	71,213,219
Weighted-average common shares outstanding - diluted	113,894,188	84,948,837	100,683,322	71,213,219
Net loss per share - basic	$ (0.39)	$ (0.5)	$ (1.3)	$ (1.83)
Net loss per share - diluted	$ (0.39)	$ (0.5)	$ (1.3)	$ (1.83)