STOCKHOLDERS' EQUITY - Stock-based compensation (Details) - Market-Based Awards |
9 Months Ended |
---|---|
Sep. 30, 2021
$ / shares
shares
| |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |
Number of Shares | shares | 3,000,000 |
Grant Date Fair Value | $ / shares | $ 3.66 |
Stock options. | |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |
Number of Shares | shares | 1,500,000 |
Grant Date Fair Value | $ / shares | $ 1.72 |
Restricted common stock | |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |
Number of Shares | shares | 1,500,000 |
Grant Date Fair Value | $ / shares | $ 1.94 |