Quarterly report pursuant to Section 13 or 15(d)

STOCK BASED COMPENSATION - Stock Incentive Plan (Details)

v3.21.2
STOCK BASED COMPENSATION - Stock Incentive Plan (Details) - USD ($)
$ in Millions
1 Months Ended 3 Months Ended 6 Months Ended 12 Months Ended
Jan. 01, 2021
Dec. 31, 2020
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Dec. 31, 2019
Dec. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Unrecognized stock-based compensation expense, stock options     $ 11.2   $ 11.2      
Weighted-average period         2 years 10 months 24 days      
Shares available for grant     21,810,237   21,810,237      
Consultant                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Granted (in shares)         12,212      
Fair value of shares         $ 0.1      
Employee                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Granted (in shares)     0 4,182,389 0 4,656,013    
Fair value of shares       $ 2.9   $ 3.6    
Non-employee                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Granted (in shares)     0 0 0      
2015 stock incentive plan                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Awards made under the plan               26,283,789
Vesting period               4 years
Expiration period               10 years
Make Plan                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Vesting period             4 years  
Expiration period             10 years  
Options and warrants to be issued             232,304  
Granted (in shares)             0  
2020 Plan                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Common stock available for future issuance   12,400,813            
Percentage of stock outstanding   5.00%            
Additional shares added to the plan 11,337,837