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COMMITMENTS AND CONTINGENCIES (Tables) | 9 Months Ended
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Sep. 30, 2023
COMMITMENTS AND CONTINGENCIES |
Schedule of STCI expense | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three months ended September 30, | ​ | Nine months ended September 30,
(in thousands) |  | 2023 |  | 2022 |  | 2023 |  | 2022
STCI expense | ​ | $ | 2,365 | ​ | $ | 3,414 | ​ | $ | 9,650 | ​ | $ | 8,699

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