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ACCRUED EXPENSES (Tables) | 12 Months Ended
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Dec. 31, 2024
ACCRUED EXPENSES. |
Schedule of accrued expenses | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | December 31 | ​
​ |  | 2024 |  | 2023 | ​
​ | ​ | (in thousands) | ​
Workers’ compensation, third-party casualty, and loss and damage claims reserves | ​ | $ | 217,161 | ​ | $ | 189,948 | ​
Accrued vacation pay | ​ |  | 63,437 | ​ |  | 63,183 | ​
Accrued compensation, including retirement benefits | ​ | ​ | 75,900 | ​ | ​ | 87,851 | ​
Taxes other than income | ​ |  | 9,924 | ​ |  | 10,743 | ​
Other | ​ |  | 28,458 | ​ |  | 26,304 | ​
Total accrued expenses | ​ | $ | 394,880 | ​ | $ | 378,029 | ​
​

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