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INCOME TAXES - Schedule of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands | Dec. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Deferred income tax assets: |  |
Insurance and claims accruals | $ 57,666 | $ 57,168
Compensation-related accruals | 10,146 | 9,931
Allowance for uncollectible accounts | 1,918 | 2,797
Operating lease liabilities | 12,484 | 8,733
Other | 3,589 | 2,235
Gross deferred income tax assets | 85,803 | 80,864
Deferred income tax liabilities: |  |
Property and equipment | 305,089 | 351,352
Investments in equity securities | 14,109 | 12,240
Prepaid expenses | 6,391 | 7,118
Operating lease right-of-use assets | 12,028 | 8,327
Investment in partnership | 14,805 | 18,790
Other | 2,897 | 3,217
Gross deferred income tax liabilities | 355,319 | 401,044
Net deferred income tax liability | $ 269,516 | $ 320,180

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