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Stock-Based Compensation - Additional Information (Details) - USD ($)
3 Months Ended 6 Months Ended
Jan. 01, 2021
Sep. 16, 2020
Sep. 02, 2020
Jul. 01, 2020
Jun. 30, 2021
Jun. 30, 2021
Employee Stock Purchase Plan (“ESPP”)            
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]            
Common stock reserved for future issuance   724,000        
Share-based payment award, expiration period   10 years        
Share-based payment award, expiration date   Jan. 01, 2030        
Percentage of automatic increase every year in common stock shares reserved for future issuance   1.00%        
Share-based payment award, terms of award issuance           the number of shares of common stock that are automatically added on January 1st of each year for a period of up to ten years, commencing on the first January 1 following the IPO date and ending on (and including) January 1, 2030, in an amount equal to the lesser of (i) one percent (1.0%) of the total number of shares of capital stock outstanding on December 31st of the preceding calendar year, and (ii) 724,000 shares of common stock.
Share-based payment award, options granted 0          
Number of shares of common stock issued under ESPP           0
Employee Stock Purchase Plan (“ESPP”) | Maximum            
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]            
Number of shares authorized for issuance   362,000        
Restricted Stock Units            
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]            
Share-based payment award, compensation cost not yet recognized, weighted-average period of recognition           1 year 6 months
Share-based payment award, unvested RSU/RSA granted, compensation cost not yet recognized         $ 13,300,000 $ 13,300,000
Stock Options            
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]            
Share-based payment award, options granted           2,586,650
Share-based payment award, options granted, exercise price per share           $ 26.41
Share-based payment award, options, compensation cost not yet recognized         47,500,000 $ 47,500,000
Share-based payment award, compensation cost not yet recognized, weighted-average period of recognition           3 years 6 months
Restricted Stock Awards            
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]            
Share-based payment award, compensation cost not yet recognized, weighted-average period of recognition           1 year 9 months 18 days
Share-based payment award, unvested RSU/RSA granted, compensation cost not yet recognized         $ 2,600,000 $ 2,600,000
Share-based payment award, RSU/RSA granted, weighted average grant date fair value       $ 5.28    
2020 Equity Incentive Plan            
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]            
Number of shares authorized for issuance   3,845,294        
Common stock reserved for future issuance   209,841        
Share-based payment award, plan modification, incremental cost           $ 0
2020 Equity Incentive Plan | Cancelled Options | Certain Employees and Consultants            
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]            
Share-based payment award, options granted       2,896,782    
Share-based payment award, options granted, exercise price per share       $ 0.80    
Award vesting period       4 years    
Share-based payment award, options grant date fair value       $ 13,800,000    
2020 Equity Incentive Plan | Restricted Stock Units            
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]            
Award vesting period     4 years      
Number of shares awarded     2,518,932      
Share-based payment award, RSU/RSA granted     331,121      
2020 Equity Incentive Plan | Restricted Stock Units | Share-based Payment Arrangement, Tranche One            
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]            
Share-based payment award, vesting rights percentage     25.00%      
2020 Equity Incentive Plan | Restricted Stock Units | Share-based Payment Arrangement, Tranche Two            
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]            
Share-based payment award, vesting rights percentage     25.00%      
2020 Equity Incentive Plan | Restricted Stock Units | Share-based Payment Arrangement, Tranche Three            
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]            
Share-based payment award, vesting rights percentage     25.00%      
2020 Equity Incentive Plan | Restricted Stock Units | Share-based Payment Arrangement, Tranche Four            
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]            
Share-based payment award, vesting rights percentage     25.00%      
2020 Equity Incentive Plan | Restricted Stock Awards | RA Session II            
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]            
Share-based payment award, RSU/RSA granted       769,058    
Award requisite service vesting period       3 years    
2020 Equity Incentive Plan | Common Stock            
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]            
Number of shares authorized for issuance   3,845,294   3,529,412    
New Plan            
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]            
Common stock reserved for future issuance 1,434,934 3,390,168        
Share-based payment award, expiration period   10 years        
Share-based payment award, commencement date   Jan. 01, 2021        
Share-based payment award, expiration date   Jan. 01, 2030        
Percentage of automatic increase every year in common stock shares reserved for future issuance   5.00%        
Share-based payment award, terms of award issuance           At December 31, 2020, there were 2,941,509 shares available for future grant under the New Plan. The number of shares of common stock reserved for issuance under the New Plan will automatically increase on January 1 of each year, for a period of ten years, from January 1, 2021 continuing through January 1, 2030, by 5% of the total number of shares of common stock outstanding on December 31 of the preceding calendar year, or a lesser number of shares as may be determined by the Company’s board of directors.  On January 1, 2021 the board of directors increased the number of common stock reserved for issuance under the New Plan by 1,434,934 shares.
New Plan | Stock Options            
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]            
Share-based payment award, expiration period           10 years
Share-based payment award, options granted         964,750 2,586,650
Share-based payment award, options, weighted-average grant date fair value         $ 14.73 $ 17.25
New Plan | Stock Options | Maximum            
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]            
Award vesting period         4 years  
New Plan | Stock Options | Minimum            
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]            
Award vesting period         1 year