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STOCK-BASED COMPENSATION - Additional Information (Details) - USD ($) |  |  |  |  | 3 Months Ended | 6 Months Ended
--- | --- | --- | --- | --- | --- | ---
Apr. 01, 2021 | Feb. 11, 2021 | Feb. 10, 2021 | Jan. 04, 2021 | Jun. 30, 2021 | Mar. 31, 2021 | Jun. 30, 2021 | Jun. 30, 2020
Stock options exercised for cash (Shares) |  |  |  |  |  |  | 1,456 |
Net proceeds from exercise of stock options |  |  |  |  |  |  | $ 3,087 | $ 0
Exercise price |  |  |  |  | $ 3.06 |  | $ 3.06 |
Compensation cost not yet recognized |  |  |  |  | $ 11,200,000 |  | $ 11,200,000 |
Compensation cost not yet recognized, period for recognition |  |  |  |  |  |  | 2 years 3 months 18 days |
2020 Equity Incentive Plan | Chief Executive Officer |  |  |  |  |  |  |  |
Exercise price of options granted |  | $ 3.06 |  |  |  |  |  |
2021 Equity Incentive Awards | Employees |  |  |  |  |  |  |  |
Exercise price |  |  |  |  | $ 2.19 | $ 1.47 | $ 2.19 |
Award vesting period | 3 years |  |  | 3 years |  |  |  |
Number of options to purchase shares |  |  |  |  | 100,000 | 90,000 | 100,000 |
Vesting percentage | 25.00% |  |  | 25.00% | 75.00% | 75.00% |  |
2021 Equity Incentive Awards | 2020 Equity Incentive Plan | Executive officer |  |  |  |  |  |  |  |
Number of Shares, Granted |  |  | 740,000 |  |  |  |  |
Exercise price |  |  | $ 3.29 |  |  |  |  |
Award vesting period |  |  | 4 years |  |  |  |  |
2021 Equity Incentive Awards | 2020 Equity Incentive Plan | Non-executive employees |  |  |  |  |  |  |  |
Number of Shares, Granted |  |  | 260,000 |  |  |  |  |
Exercise price |  |  | $ 3.29 |  |  |  |  |
Award vesting period |  |  | 4 years |  |  |  |  |
2021 Equity Incentive Awards | 2020 Equity Incentive Plan | Chief Executive Officer |  |  |  |  |  |  |  |
Number of options to purchase shares |  | 430,000 |  |  |  |  |  |

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