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Convertible Preferred Stock, Stockholders’ Equity (Deficit) and Equity Incentive Plan - Summary of RSU Activity Under Equity Incentive Plans and Related Information (Details) - Restricted Stock Units (RSUs) [Member] - $ / shares
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Number of Shares      
Unvested beginning balance (in shares) 0    
Granted (in shares) 3,907,260 0 0
Vested (in shares) (37,100) 0 0
Cancelled and forfeited (in shares) (132,595)    
Unvested ending balance (in shares) 3,737,565 0  
Weighted-Average Grant Date Fair Value      
Unvested beginning balance (in dollars per share) $ 0    
Granted (in dollars per share) 20.53    
Vested (in dollars per share) 28.03    
Cancelled and forfeited (in dollars per share) 33.14    
Unvested ending balance (in dollars per share) $ 20.01 $ 0