Quarterly report pursuant to Section 13 or 15(d)

Stockholders??? Deficit - Narrative (Details)

v3.21.2
Stockholders’ Deficit - Narrative (Details) - USD ($)
1 Months Ended 9 Months Ended 33 Months Ended
Sep. 30, 2016
Sep. 30, 2014
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2016
Jun. 30, 2021
Mar. 31, 2021
Dec. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Options outstanding (in shares)     8,513,298     7,622,443 8,817,266 9,868,915
Common Share Warrants                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Warrants issued (in shares) 62,000 45,000     107,000      
Strike price (in $ per share) $ 0.6825 $ 0.20     $ 0.6825      
Fair value of warrants $ 22,192 $ 9,178     $ 22,192      
Term after initial public offering   3 years            
Equity Incentive Plan                
Equity [Abstract]                
Number of shares authorized (in shares)     18,713,504 11,679,353        
Vesting term, cliff     1 year          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Number of shares authorized (in shares)     18,713,504 11,679,353        
Vesting term     4 years          
Vesting term, cliff     1 year          
Unrecognized equity-based compensation expense     $ 38,600,000 $ 7,500,000        
Equity Incentive Plan | Options to purchase common stock                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Expected term     6 years          
Equity Incentive Plan | Options With Accelerated Vesting Clauses                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Options outstanding (in shares)     2,328,528 213,332        
Equity Incentive Plan | Minimum | Options Granted in Lieu of Bonuses                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Vesting term     2 years          
Equity Incentive Plan | Maximum | Options Granted in Lieu of Bonuses                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Vesting term     3 years          
Equity Incentive Plan | Weighted Average                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Vesting term     3 years 1 month 20 days 2 years 7 months 2 days