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COMMITMENTS AND CONTINGENCIES (Tables) | 12 Months Ended
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Dec. 31, 2023
COMMITMENTS AND CONTINGENCIES |
Schedule of STCI expense | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
(in thousands) |  | 2023 |  | 2022 | ​ | 2021
STCI expense | ​ | $ | 10,651 | ​ | $ | 12,039 | ​ | $ | 8,535

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