Net Loss Per Share - Calculation of Basic and Diluted (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Numerator:
Net loss	$ (49,334)	$ (46,363)	$ (87,602)	$ (65,026)
Denominator:
Weighted average shares used in computing net loss per share-basic	144,782,220	131,804,121	143,909,469	86,761,169
Weighted average shares used in computing net loss per share-diluted	144,782,220	131,804,121	143,909,469	86,761,169
Net loss per shares-basic	$ (0.34)	$ (0.35)	$ (0.61)	$ (0.75)
Net loss per share-diluted	$ (0.34)	$ (0.35)	$ (0.61)	$ (0.75)