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FINANCIAL INSTRUMENTS AND FAIR VALUE MEASUREMENTS - Assets Measured at Fair Value on a Nonrecurring Basis (Details) $ in Thousands |  | 12 Months Ended |
--- | --- | --- | ---
Sep. 01, 2023 | Dec. 31, 2024 USD ($) | Dec. 31, 2023 USD ($) | Nov. 30, 2021 USD ($)
Fair value measurement |  |  |  |
Equity Investment |  |  | $ 28,700 |
Revenue equipment and software |  |  |  |
Fair value measurement |  |  |  |
Assets held for sale |  | $ 4,600 |  |
Nonrecurring basis | Level 2 | Revenue equipment |  |  |  |
Fair value measurement |  |  |  |
Increase (decrease) in asset fair value |  | (1,393) |  |
Nonrecurring basis | Level 2 | Software |  |  |  |
Fair value measurement |  |  |  |
Increase (decrease) in asset fair value |  | (307) |  |
Nonrecurring basis | Level 3 |  |  |  |
Fair value measurement |  |  |  |
Equity Investment |  |  |  | $ 25,000
Nonrecurring basis | Level 3 | Equity investment |  |  |  |
Fair value measurement |  |  |  |
Increase (decrease) in asset fair value |  | $ (28,739) | 3,739 |
Nonrecurring basis | Level 3 | Operating right-of-use assets |  |  |  |
Fair value measurement |  |  |  |
Increase (decrease) in asset fair value |  |  | (28,124) |
Nonrecurring basis | Level 3 | Leasehold improvements |  |  |  |
Fair value measurement |  |  |  |
Increase (decrease) in asset fair value |  |  | $ (2,038) |
Fair Value | Nonrecurring basis | Level 3 |  |  |  |
Fair value measurement |  |  |  |
Operating Right-Of-Use Assets and Leasehold Improvements, Valuation Technique | us-gaap:ValuationTechniqueDiscountedCashFlowMember |  |  |
Operating Right-Of-Use Assets and Leasehold Improvements, Measurement Input | us-gaap:MeasurementInputDiscountRateMember |  |  |
Fair Value | Nonrecurring basis | Level 3 | Minimum |  |  |  |
Fair value measurement |  |  |  |
Operating right-of-use assets and Leasehold improvements, Measurement input | 0.075 |  |  |
Fair Value | Nonrecurring basis | Level 3 | Maximum |  |  |  |
Fair value measurement |  |  |  |
Operating right-of-use assets and Leasehold improvements, Measurement input | 0.095 |  |  |

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