Goodwill and Intangible Assets - Goodwill Roll Forward (Details) - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | 9 Months Ended | 12 Months Ended | ||
|---|---|---|---|---|---|---|
Sep. 30, 2024 |
Sep. 30, 2023 |
Jun. 30, 2024 |
Sep. 30, 2024 |
Sep. 30, 2023 |
Dec. 31, 2016 |
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| Goodwill [Roll Forward] | ||||||
| Beginning balance | $ 278,706 | $ 278,706 | ||||
| Acquisition | 1,544,830 | |||||
| Impairment | $ (14,751) | $ 0 | (1,092,714) | (1,107,465) | $ 0 | |
| Ending balance | 716,071 | 716,071 | ||||
| Expedited Freight | ||||||
| Goodwill [Roll Forward] | ||||||
| Beginning balance | 141,720 | 141,720 | ||||
| Acquisition | 0 | |||||
| Impairment | 0 | $ (25,686) | ||||
| Ending balance | 141,720 | 141,720 | ||||
| Intermodal | ||||||
| Goodwill [Roll Forward] | ||||||
| Beginning balance | 136,986 | 136,986 | ||||
| Acquisition | 0 | |||||
| Impairment | 0 | |||||
| Ending balance | 136,986 | 136,986 | ||||
| Omni Logistics | ||||||
| Goodwill [Roll Forward] | ||||||
| Beginning balance | $ 0 | 0 | ||||
| Acquisition | 1,544,830 | |||||
| Impairment | (1,107,465) | |||||
| Ending balance | $ 437,365 | $ 437,365 | ||||
| X | ||||||||||
- Definition Amount, after accumulated impairment loss, of asset representing future economic benefit arising from other asset acquired in business combination or from joint venture formation or both, that is not individually identified and separately recognized. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount of impairment loss from asset representing future economic benefit arising from other asset acquired in business combination or from joint venture formation or both, that is not individually identified and separately recognized. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of increase (decrease) from measurement period adjustment of asset representing future economic benefit arising from other asset acquired in business combination or from joint venture formation or both, that is not individually identified and separately recognized. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. No definition available.
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