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ACCUMULATED OTHER COMPREHENSIVE LOSS (Tables) | 3 Months Ended
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Mar. 31, 2025
ACCUMULATED OTHER COMPREHENSIVE LOSS |
Summary of Changes in Accumulated Other Comprehensive Loss by Component | Changes in accumulated other comprehensive loss by component for the three months ended March 31, 2025 and 2024 consisted of the following (in thousands): ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | Other-Than- | ​ | ​ | ​ | ​ | ​
​ | ​ | Minimum | ​ | Temporary | ​ | ​ | ​ | ​ | ​
​ | ​ | Pension | ​ | Impairment of | ​ | Interest Rate | ​ | ​ | ​
​ |  | Liability |  | Investment |  | Derivatives |  | Total
Balance, December 31, 2024 | ​ | $ | (12,120) | ​ | $ | (2,667) | ​ | $ | (385) | ​ | $ | (15,172)
Losses arising during period | ​ | ​ | — | ​ | ​ | — | ​ | ​ | (8) | ​ | ​ | (8)
Amounts reclassified from accumulated other comprehensive loss | ​ | ​ | (176) | ​ |  | 53 | ​ |  | 48 | ​ |  | (75)
Income tax expense | ​ | ​ | (5) | ​ |  | — | ​ |  | — | ​ |  | (5)
Net other comprehensive income (loss) | ​ |  | (181) | ​ |  | 53 | ​ |  | 40 | ​ |  | (88)
Balance, March 31, 2025 | ​ | $ | (12,301) | ​ | $ | (2,614) | ​ | $ | (345) | ​ | $ | (15,260)
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | Other-Than- | ​ | ​ | ​ | ​ | ​
​ | ​ | Minimum | ​ | Temporary | ​ | ​ | ​ | ​ | ​
​ | ​ | Pension | ​ | Impairment of | ​ | Interest Rate | ​ | ​ | ​
​ |  | Liability |  | Investment |  | Derivatives |  | Total
Balance, December 31, 2023 | ​ | $ | (15,187) | ​ | $ | (2,878) | ​ | $ | (1,322) | ​ | $ | (19,387)
Gains arising during period | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 1,975 | ​ | ​ | 1,975
Amounts reclassified from accumulated other comprehensive loss | ​ |  | (107) | ​ |  | 53 | ​ |  | (547) | ​ |  | (601)
Income tax benefit | ​ |  | 34 | ​ |  | — | ​ |  | — | ​ |  | 34
Net other comprehensive income (loss) | ​ |  | (73) | ​ |  | 53 | ​ |  | 1,428 | ​ |  | 1,408
Balance, March 31, 2024 | ​ | $ | (15,260) | ​ | $ | (2,825) | ​ | $ | 106 | ​ | $ | (17,979)
​

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