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EQUITY COMPENSATION - Narrative (Details) - USD ($) $ / shares in Units, $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Equity-based compensation expense | $ 6,460 | $ 5,184 | $ 3,843
Restricted Stock Units (RSUs) |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Total compensation costs related to non-vested awards | $ 3,500 |  |
Weighted average period (in years) | 1 year 10 months 24 days |  |
Number of awards granted in period (in shares) | 292,091 |  |
Weighted-average price of awards (in usd per share) | $ 16.30 |  |
Number of awards vested in period (in shares) | 82,813 |  |
Number of awards forfeitures in period (in shares) | 30,797 |  |
Equity-based compensation expense | $ 3,300 |  |
Stock Option |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Options outstanding (in shares) | 1,263,658 | 912,923 |
Share price (in usd per share) | $ 12.00 | $ 13.23 | $ 27.95
Weighted average fair value of options vested (in usd per share) | $ 14.58 | $ 14.77 | $ 15.91
Total fair value of options that vested during the year | $ 1,200 | $ 1,400 | $ 1,600
Total compensation costs related to non-vested awards | $ 5,700 |  |
Weighted average period (in years) | 2 years |  |
Weighted average fair value of options granted (in usd per share) | $ 7.05 | $ 0 | $ 11.93
Employee Stock |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Share price (in usd per share) | $ 12.63 |  |
Cash compensation limit | $ 25 |  |
Common stock price to market value (percentage) | 85.00% |  |
Number of shares employees had subscribed to purchase (in shares) | 274,956 |  |
Weighted average fair value of options granted (in usd per share) | $ 5.00 | $ 3.43 | $ 8.26
Director |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Period of options granted (in years) | 6 months |  |
Director | Restricted Stock Units (RSUs) |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Period of options granted (in years) | 6 months |  |
Employee | Restricted Stock Units (RSUs) |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Period of options granted (in years) | 3 years |  |
Key Employee | Restricted Stock Units (RSUs) |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Period of options granted (in years) | 3 years |  |
Stock Incentive Plan |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Stock option exercisable period (not exceeding, in years) | 10 years |  |
Options outstanding (in shares) | 390,466 |  |
Directors Stock Option Plan |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Options outstanding (in shares) | 78,261 |  |
Long Term Incentive Plan |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Options outstanding (in shares) | 1,211,283 |  |
Options available for future grant (in shares) | 1,790,581 |  |
Minimum | Key Employee |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Period of options granted (in years) | 3 years |  |
Maximum |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Stock option exercisable period (not exceeding, in years) | 10 years |  |
Maximum | Key Employee |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Period of options granted (in years) | 5 years |  |

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