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STOCK-BASED COMPENSATION - 2015 EIP Stock Options and Other (Details) - 2015 EIP Plan - Stock Options - USD ($) $ / shares in Units, $ in Thousands |  | 3 Months Ended | 6 Months Ended
--- | --- | --- | ---
Feb. 23, 2021 | Jun. 30, 2022 | Jun. 30, 2021 | Jun. 30, 2022 | Jun. 30, 2021
Unrecognized compensation cost |  |  |  |  |
Unamortized compensation cost |  | $ 200 |  | $ 200 |
Future amortization of stock based compensation |  |  |  |  |
Remainder of 2022 |  | 111 |  | 111 |
2023 |  | 81 |  | 81 |
2024 |  | $ 8 |  | $ 8 |
Number of Options |  |  |  |  |
Outstanding at beginning of period (in shares) |  |  |  | 916,287 |
Granted (in shares) | 118,552 |  |  |  |
Exercised (in shares) |  |  |  | (392,774) |
Outstanding at end of period (in shares) |  | 523,513 |  | 523,513 |
Weighted Average Exercise Price |  |  |  |  |
Outstanding at beginning of period (in dollars per share) |  |  |  | $ 9.02 |
Granted (in dollars per share) | $ 9.91 |  |  |  |
Exercised (in dollars per share) |  |  |  | 10.19 |
Outstanding at end of period (in dollars per share) |  | $ 8.14 |  | 8.14 |
Weighted Average Fair Value |  |  |  |  |
Outstanding at beginning of period (in dollars per share) |  |  |  | 4.08 |
Exercised (in dollars per share) |  |  |  | 5.45 |
Outstanding at end of period (in dollars per share) |  | $ 3.05 |  | $ 3.05 |
Options outstanding and unvested |  | 193,891 |  | 193,891 |
Weighted Average Exercise Price Of Outstanding and Unvested Options |  |  |  | $ 8.22 |
Options Outstanding and Unvested, Weighted Average Remaining Contractual Life |  |  |  | 4 years 25 days |
Options Exercisable, Number of options |  | 329,622 |  | 329,622 |
Options Exercisable, Weighted Average Exercise Price |  | $ 8.09 |  | $ 8.09 |
Options Exercisable, Weighted Average Fair Value (in dollars per share) |  |  |  | $ 3.11 |
Options Exercisable, Weighted Average Remaining Contractual Life |  |  |  | 3 years 4 months 6 days |
Stock options outstanding |  | 523,513 |  | 523,513 |
General and Administrative Expense |  |  |  |  |
Stock options |  |  |  |  |
Amortization expense |  | $ 55 | $ 151 | $ 168 | $ 330

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