Quarterly report pursuant to Section 13 or 15(d)

Stock Options and Warrants - Options, RSUs, PSUs (Details)

v3.21.1
Stock Options and Warrants - Options, RSUs, PSUs (Details)
$ / shares in Units, $ in Thousands
9 Months Ended
Sep. 30, 2020
$ / shares
shares
Feb. 28, 2021
USD ($)
item
$ / shares
shares
Feb. 29, 2020
USD ($)
Aug. 31, 2020
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Number of active plans | item   1    
Number of inactive plans | item   1    
Number of shares authorized for issuance | shares   50,000,000   25,000,000
Annual increase in shares authorized, as a percent of outstanding shares   1.00%    
Plan extension period   10 years    
Shares available for future stock-based grants | shares   15,400,000    
Proceeds from stock options exercised | $   $ 1,829 $ 54  
Executives        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Stock option granted, Shares | shares 3,350,000      
Stock Options        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Stock option granted, Shares | shares   1,900,000    
Award vesting period   3 years    
Award term   10 years    
Exercise of stock options, shares | shares   2,600,000    
Proceeds from stock options exercised | $   $ 1,800    
Stock Options | Maximum        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Stock option granted, exercise price   $ 6.15    
Stock options grant date fair value   4.46    
Stock options exercised, exercise price   1.40    
Stock Options | Minimum        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Stock option granted, exercise price   2.60    
Stock options grant date fair value   1.84    
Stock options exercised, exercise price   $ 0.30    
Stock Options | Executives        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Stock option granted, Shares | shares 3,350,000      
Stock option granted, exercise price $ 3.12      
Stock options grant date fair value $ 2.12      
Award vesting period 3 years      
Stock Options | Director [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Stock option granted, Shares | shares 506,250      
Stock option granted, exercise price $ 6.15      
Stock options grant date fair value $ 4.20      
Award vesting period 3 years      
Units granted per grantee | shares 168,750      
Restricted Stock Units (RSUs) [Member] | Executives        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Stock units granted, shares | shares 1,120,000      
Award vesting period 3 years      
Units granted, grant date fair value $ 3.12      
Performance Shares [Member] | Executives        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Stock units granted, shares | shares 4,350,000