Summary of Significant Accounting Policies - Computation of Net Loss Per Common Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2023	Mar. 31, 2023	Jun. 30, 2022	Mar. 31, 2022	Jun. 30, 2023	Jun. 30, 2022
Numerator:
Net loss	$ (38,261)	$ (47,647)	$ (46,519)	$ (32,450)	$ (85,908)	$ (78,969)
Denominator:
Weighted average number of shares used in computing net loss per share, basic (in shares)	82,456		79,270		82,233	78,650
Weighted average number of shares used in computing net loss per share, diluted (in shares)	82,456		79,270		82,233	78,650
Net loss per share, basic (in dollars per share)	$ (0.46)		$ (0.59)		$ (1.04)	$ (1.00)
Net loss per share, diluted (in dollars per share)	$ (0.46)		$ (0.59)		$ (1.04)	$ (1.00)