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CASH FLOW INFORMATION - Stock-Based Compensation (Details) - 2015 EIP Plan - USD ($) $ in Thousands |  |  |  |  |  |  |  | 6 Months Ended
--- | --- | --- | --- | --- | --- | --- | --- | ---
Jun. 16, 2023 | May 16, 2023 | Apr. 14, 2023 | Apr. 03, 2023 | Feb. 21, 2023 | May 16, 2022 | Feb. 23, 2022 | Jun. 30, 2023
Restricted Stock Units |  |  |  |  |  |  |  |
Non-cash investing and financing activities |  |  |  |  |  |  |  |
Granted (in shares) | 3,917 | 43,729 | 75,920 | 1,630 | 68,758 | 27,331 | 201,934 | 205,118
Aggregate fair value | $ 56 | $ 600 | $ 1,237 | $ 25 | $ 1,250 | $ 600 | $ 3,950 |
Performance based restricted stock units |  |  |  |  |  |  |  |
Non-cash investing and financing activities |  |  |  |  |  |  |  |
Granted (in shares) | 3,917 |  | 75,920 |  |  |  |  |
Aggregate fair value | $ 64 |  | $ 1,451 |  |  |  |  |

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