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CASH FLOW INFORMATION - Stock-Based Compensation (Details) - 2015 EIP Plan - USD ($) $ / shares in Units, $ in Thousands |  |  |  |  |  |  |  |  |  | 12 Months Ended
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Dec. 23, 2022 | May 16, 2022 | Feb. 23, 2022 | May 13, 2021 | May 04, 2021 | Feb. 23, 2021 | Jul. 15, 2020 | Feb. 25, 2020 | Mar. 04, 2019 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Restricted Stock Units |  |  |  |  |  |  |  |  |  |  |  |
Non-cash investing and financing activities |  |  |  |  |  |  |  |  |  |  |  |
Granted (in shares) | 270,097 | 27,331 | 201,934 | 33,525 | 18,428 | 103,599 | 42,642 | 173,749 |  | 533,969 | 159,492 | 221,903
Aggregate fair value | $ 4,200 | $ 600 | $ 3,950 | $ 515 | $ 300 | $ 1,027 | $ 255 | $ 1,227 |  |  |  |
Stock Options |  |  |  |  |  |  |  |  |  |  |  |
Non-cash investing and financing activities |  |  |  |  |  |  |  |  |  |  |  |
Options to purchase (in shares) |  |  |  |  |  | 118,552 |  | 344,568 | 240,540 |  | 118,552 | 344,568
Exercise price |  |  |  |  |  | $ 9.91 |  | $ 7.06 |  |  | $ 9.91 | $ 7.06
Aggregate fair value |  |  |  |  |  | $ 513 |  | $ 693 | $ 904 |  |  |

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