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Convertible Preferred Stock - Beneficial Conversion Feature (Details) - USD ($)
 2 Months Ended 16 Months Ended
Jul. 15, 2019
Jun. 26, 2019
Jun. 24, 2019
Oct. 22, 2020
Oct. 22, 2020
Temporary Equity [Line Items]          
BCF         $ 12,039,000
Common Stock | June 24, 2019 | Cash          
Temporary Equity [Line Items]          
Fair value of the Common Stock (in dollars per share)     $ 1.36    
Common Stock | June 24, 2019 | Settlement Of SAFEs          
Temporary Equity [Line Items]          
Fair value of the Common Stock (in dollars per share)     1.36    
Common Stock | June 24, 2019 | Settlement Of Note          
Temporary Equity [Line Items]          
Fair value of the Common Stock (in dollars per share)     1.36    
Common Stock | June 26, 2019 | Cash          
Temporary Equity [Line Items]          
Fair value of the Common Stock (in dollars per share)   $ 1.36      
Common Stock | July 15, 2019 | Cash          
Temporary Equity [Line Items]          
Fair value of the Common Stock (in dollars per share) $ 1.36        
Common Stock | August 24, 2020 - September 22, 2020 | Cash          
Temporary Equity [Line Items]          
Fair value of the Common Stock (in dollars per share)       $ 10.33 $ 10.33
Series A Convertible Preferred Stock | June 24, 2019 | Cash          
Temporary Equity [Line Items]          
Effective Conversion Price (in dollars per share)     $ 3.18    
Number of Shares Issuable upon Conversion (in shares)     8,833,786    
BCF     $ 0    
Series A Convertible Preferred Stock | June 24, 2019 | Settlement Of SAFEs          
Temporary Equity [Line Items]          
Effective Conversion Price (in dollars per share)     $ 3.18    
Number of Shares Issuable upon Conversion (in shares)     1,024,569    
BCF     $ 0    
Series A Convertible Preferred Stock | June 26, 2019 | Cash          
Temporary Equity [Line Items]          
Effective Conversion Price (in dollars per share)   $ 3.18      
Number of Shares Issuable upon Conversion (in shares)   9,443,212      
BCF   $ 0      
Series A Convertible Preferred Stock | July 15, 2019 | Cash          
Temporary Equity [Line Items]          
Effective Conversion Price (in dollars per share) $ 3.18        
Number of Shares Issuable upon Conversion (in shares) 157,382        
BCF $ 0        
Series A-1 Convertible Preferred Stock | June 24, 2019 | Settlement Of SAFEs          
Temporary Equity [Line Items]          
Effective Conversion Price (in dollars per share)     $ 1.12    
Number of Shares Issuable upon Conversion (in shares)     2,226,013    
BCF     $ 536,000    
Series A-2 Convertible Preferred Stock | June 24, 2019 | Settlement Of SAFEs          
Temporary Equity [Line Items]          
Effective Conversion Price (in dollars per share)     $ 1.11    
Number of Shares Issuable upon Conversion (in shares)     18,030,728    
BCF     $ 4,590,000    
Series A-3 Convertible Preferred Stock | June 24, 2019 | Settlement Of SAFEs          
Temporary Equity [Line Items]          
Effective Conversion Price (in dollars per share)     $ 1.31    
Number of Shares Issuable upon Conversion (in shares)     3,047,168    
BCF     $ 156,000    
Series A-4 Convertible Preferred Stock | June 24, 2019 | Settlement Of SAFEs          
Temporary Equity [Line Items]          
Effective Conversion Price (in dollars per share)     $ 1.47    
Number of Shares Issuable upon Conversion (in shares)     679,188    
BCF     $ 0    
Series A-5 Convertible Preferred Stock | June 24, 2019 | Settlement Of SAFEs          
Temporary Equity [Line Items]          
Effective Conversion Price (in dollars per share)     $ 1.48    
Number of Shares Issuable upon Conversion (in shares)     1,691,162    
BCF     $ 0    
Series A-6 Convertible Preferred Stock | June 24, 2019 | Settlement Of SAFEs          
Temporary Equity [Line Items]          
Effective Conversion Price (in dollars per share)     $ 2.22    
Number of Shares Issuable upon Conversion (in shares)     3,372,566    
BCF     $ 0    
Series A-7 Convertible Preferred Stock | June 24, 2019 | Settlement Of SAFEs          
Temporary Equity [Line Items]          
Effective Conversion Price (in dollars per share)     $ 2.54    
Number of Shares Issuable upon Conversion (in shares)     19,896,477    
BCF     $ 0    
Series A-8 Convertible Preferred Stock | June 24, 2019 | Settlement Of SAFEs          
Temporary Equity [Line Items]          
Effective Conversion Price (in dollars per share)     $ 2.70    
Number of Shares Issuable upon Conversion (in shares)     5,258,501    
BCF     $ 0    
Series A-9 Convertible Preferred Stock | June 24, 2019 | Settlement Of SAFEs          
Temporary Equity [Line Items]          
Effective Conversion Price (in dollars per share)     $ 2.86    
Number of Shares Issuable upon Conversion (in shares)     10,205,127    
BCF     $ 0    
Series A-10 Convertible Preferred Stock | June 24, 2019 | Settlement Of SAFEs          
Temporary Equity [Line Items]          
Effective Conversion Price (in dollars per share)     $ 3.02    
Number of Shares Issuable upon Conversion (in shares)     3,445,914    
BCF     $ 0    
Series A-11 Convertible Preferred Stock | June 24, 2019 | Settlement Of Note          
Temporary Equity [Line Items]          
Effective Conversion Price (in dollars per share)     $ 1.78    
Number of Shares Issuable upon Conversion (in shares)     4,326,513    
BCF     $ 0    
Series X Convertible Preferred Stock | August 24, 2020 - September 22, 2020 | Cash          
Temporary Equity [Line Items]          
Effective Conversion Price (in dollars per share)       $ 9.96 $ 9.96
Number of Shares Issuable upon Conversion (in shares)       18,457,230 18,457,230
BCF       $ 6,757,000