Quarterly report pursuant to Section 13 or 15(d)

Stock Based Compensation - Stock Options With Service-based Vesting Conditions (Details)

v3.21.1
Stock Based Compensation - Stock Options With Service-based Vesting Conditions (Details) - Service Based Options
 3 Months Ended 12 Months Ended
Mar. 31, 2021
$ / shares
shares
Dec. 31, 2020
$ / shares
shares
Number of shares    
Balance, beginning of period (in shares) | shares 8,830,674  
Granted (in shares) | shares 3,467,817  
Options exercises in period (in shares) | shares (128,800)  
Forfeitures (in shares) | shares (224,800)  
Balance, ending of period (in shares) | shares 11,944,891 8,830,674
Exercisable (in shares) | shares 3,914,889  
Weighted average exercise price per share    
Beginning of period (in dollars per share) $ 3.95  
Granted (in dollars per share) 3.35  
Exercised (in dollars per share) 1.34  
Forfeitures (in dollars per share) 3.77  
Ending of period (in dollars per share) 3.81 $ 3.95
Exercisable (in dollars per share) 4.39  
Option Activity, Fair value of options granted    
Beginning of period (in dollars per share) 2.36  
Granted (in dollars per share) 2.22  
Exercised (in dollars per share) 1.00  
Forfeited (in dollars per share) 2.40  
End of period (in dollars per share) 2.34 $ 2.36
Exercisable (in dollars per share) $ 2.53  
Weighted average remaining contractual term (in years)    
Balance 8 years 2 months 12 days 7 years 8 months 12 days
Exercisable 6 years