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Convertible Preferred Stock, Stockholders’ Equity (Deficit) and Equity Incentive Plan - Restricted Stock Unit with Performance Conditions (Details) - USD ($)
1 Months Ended 12 Months Ended
Feb. 02, 2021
Feb. 28, 2021
Jun. 30, 2014
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]            
Payment to receive shares of stock       $ 1,054,000 $ 0 $ 0
Stock-based compensation expense       25,650,000 $ 2,929,000 $ 1,998,000
Performance-based Restricted Stock Unit            
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]            
Total fair value of RSU vested       $ 1,000,000    
Granted (in shares)       3,907,260 0 0
Number of shares vested (in shares)       37,100 0 0
Executive Officer | Performance-based Restricted Stock Unit | Share-based Payment Arrangement, Employee            
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]            
Granted (in shares)     187,500      
Number of shares vested (in shares) 187,500          
Grant date fair value     $ 500,000      
Payment to receive shares of stock     $ 0      
Requisite service period     1 year      
Stock-based compensation expense   $ 500,000