Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation - Stock option plan (Details)

v3.21.2
Stock-Based Compensation - Stock option plan (Details) - USD ($)
3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2021
Jun. 30, 2021
Mar. 31, 2021
Sep. 30, 2021
Dec. 31, 2020
Shares Underlying Options          
Outstanding at beginning 6,024,732 6,127,547 8,247,340 8,247,340  
Retroactive application of reverse recapitalization         (1,967,440)
Granted 0 0 29,420    
Forfeited (10,496) (39,309) (145,878)    
Exercised (1,113,029) (63,506) (35,895)    
Outstanding at ending 4,901,207 6,024,732 6,127,547 4,901,207 8,247,340
Exercisable 4,833,059     4,833,059  
Weighted Average Exercise Price          
Outstanding at beginning (in dollars per share) $ 0.59 $ 0.58 $ 0.44 $ 0.44  
Retroactive application of reverse recapitalization (in dollars per share)         $ 0
Granted (in dollars per share) 0 0 0.36    
Forfeited (in dollars per share) 0.40 0.44 0.43    
Exercised (in dollars per share) 0.44 0.45 0.43    
Outstanding at ending (in dollars per share) 0.62 $ 0.59 $ 0.58 0.62 $ 0.44
Exercisable (in dollars per share) $ 0.62     $ 0.62  
Weighted Average Remaining Contractual Term (in years)          
Outstanding (in years) 6 years 9 months 18 days 6 years 3 months 3 days 6 years 6 months 10 days   6 years 8 months 19 days
Granted (in years)     9 years 9 months 25 days    
Exercisable at the end (in dollars) $ 6,790     $ 6,790  
Cumulative Effect Adjusted [Member]          
Shares Underlying Options          
Outstanding at beginning     6,279,900 6,279,900  
Outstanding at ending         6,279,900
Weighted Average Exercise Price          
Outstanding at beginning (in dollars per share)     $ 0.58 $ 0.58  
Outstanding at ending (in dollars per share)         $ 0.58
Weighted Average Remaining Contractual Term (in years)          
Outstanding (in years)     6 years 7 months 20 days