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Stock-Based Compensation - Additional Information (Details) - USD ($)
$ in Millions
6 Months Ended
Jun. 30, 2021
Dec. 31, 2020
Oct. 20, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Total shares of common stock reserved (in shares) 12,054,212 11,250,830  
Liability for early exercise of stock options $ 0.3 $ 0.4  
Stock options      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Maximum contractual term 10 years    
Exercise period from termination upon death 12 months    
Exercise period from termination upon disability 6 months    
Exercise period from termination upon all other separations 3 months    
2020 Plan      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Total shares of common stock reserved (in shares)     9,000,000
Common stock reserved for issuance, increase percentage on first business day of each of next ten fiscal years 4.00%    
2016 Plan      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Total shares of common stock reserved (in shares)     2,432,980
Minimum exercise price, percent of fair market value of common stock on grant date 100.00%    
2016 Plan | Minimum      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Service condition period for full vesting 1 year    
2016 Plan | Maximum      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Service condition period for full vesting 4 years