Net Loss Per Share - Schedule of Basic and Diluted Net Loss per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Earnings Per Share [Abstract]
Net loss	$ (110,556)	$ (805)	$ (229,415)	$ (18,772)
Weighted-average number of shares outstanding used in computing net loss per share, basic and diluted	35,359,999	17,090,050	30,383,375	15,903,517
Net loss per share, basic and diluted	$ (3.13)	$ (0.05)	$ (7.55)	$ (1.18)