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STOCK-BASED COMPENSATION - 2015 EIP Stock Options and Other (Details) - 2015 Plan - Employee Stock Option - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2023 | Sep. 30, 2024 | Sep. 30, 2023
Unrecognized compensation cost |  |  |
Unamortized compensation cost |  | $ 0 |
Number of Options |  |  |
Outstanding at beginning of period (in shares) |  | 368,190 |
Exercised (in shares) |  | (65,245) |
Outstanding at end of period (in shares) |  | 302,945 |
Weighted Average Exercise Price |  |  |
Outstanding at beginning of period (in dollars per share) |  | $ 7.93 |
Exercised (in dollars per share) |  | 8.03 |
Outstanding at end of period (in dollars per share) |  | 7.91 |
Weighted Average Fair Value |  |  |
Outstanding at beginning of period (in dollars per share) |  | 2.82 |
Exercised (in dollars per share) |  | 3.09 |
Outstanding at end of period (in dollars per share) |  | $ 2.76 |
Options Outstanding and Unvested, Weighted Average Remaining Contractual Life |  | 0 years |
Options Exercisable, Number of options |  | 302,945 |
Options Exercisable, Weighted Average Exercise Price |  | $ 7.91 |
Options Exercisable, Weighted Average Fair Value (in dollars per share) |  | $ 2.76 |
Options Exercisable, Weighted Average Remaining Contractual Life |  | 1 year 7 months 17 days |
General and administrative expense |  |  |
Stock options |  |  |
Amortization expense | $ 13 | $ 6 | $ 71

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