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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES -Share Based Compensation (Details) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2022 | Mar. 31, 2021 | Dec. 31, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Stock-based compensation | $ 1,495 | $ 1,690 |
Restricted Stock |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Shares of unvested restricted stock outstanding (in shares) | 943,386 |  | 952,971
Weighted average grant date fair value of stock grants per share (in dollars per share) | $ 5.74 |  |
Unrecognized compensation cost related to unvested restricted stock | $ 3,100 |  |
Period in which compensation cost expected to be recognized | 1 year 7 months 6 days |  |
PSUs |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Period in which compensation cost expected to be recognized | 1 year 6 months |  |
Number of performance stock units ("PSUs") outstanding (in shares) | 1,049,910 |  |
Weighted average grant date fair value of PSUs per unit (in dollars per share) | $ 8.11 |  |
Minimum final number of shares of common stock issuable based on performance multiplier (in shares) | 0 |  |
Maximum final number of shares of common stock issuable based on performance multiplier (in shares) | 2,099,820 |  |
Unrecognized expense, performance share units | $ 2,700 |  |
General and Administrative Expense |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Stock-based compensation | $ 1,500 | $ 1,700 |

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