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
	Mar. 31, 2022	Mar. 31, 2021
Numerator:
Net loss	$ (32,450)	$ (27,544)
Denominator:
Weighted average number of shares used in computing net loss per share, basic (in shares)	78,023	76,034
Weighted average number of shares used in computing net loss per share, diluted (in shares)	78,023	76,034
Net loss per share, basic (in dollars per share)	$ (0.42)	$ (0.36)
Net loss per share, diluted (in dollars per share)	$ (0.42)	$ (0.36)