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Other Intangible, Net and Goodwill (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2022 | Sep. 30, 2021 | Sep. 30, 2022 | Sep. 30, 2021 | Dec. 31, 2021
Goodwill and Intangible Assets Disclosure [Abstract] |  |  |  |  |
Finite-Lived Intangible Assets, Amortization Expense | $ 1,000 | $ 600 | $ 2,200 | $ 1,800 |
Carrying amount of goodwill | 316,799 |  | 316,799 |  | $ 168,295
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |
Gross Amount | 92,920 |  | 92,920 |  |
Accumulated Amortization | 21,066 |  | 21,066 |  |
Net Intangible Assets | 71,854 |  | 71,854 |  |
Gross Intangible Assets Acquired, Smith Transport |  |  | 28,100 |  |
Finite-lived Intangible Assets Acquired, Smith Transport |  |  | 20,100 |  |
Indefinite-lived Intangible Assets Acquired, Smith Transport |  |  | 8,000 |  |
Gross Intangible Assets Acquired, CFI | 55,100 |  | 55,100 |  |
Finite-lived Intangible Assets Acquired, CFI | 31,600 |  | 31,600 |  |
Indefinite-lived Intangible Assets Acquired, CFI | 23,500 |  | 23,500 |  |
Goodwill, Acquired During Period, Smith Transport | 1,600 |  | 42,129 |  |
Goodwill, Acquired During Period, CFI | 106,375 |  | 106,375 |  |
Customer Relationships [Member] |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |
Gross Amount | 74,188 |  | 74,188 |  |
Accumulated Amortization | 7,260 |  | 7,260 |  |
Net Intangible Assets | 66,928 |  | 66,928 |  |
Tradename |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |
Gross Amount | 12,900 |  | 12,900 |  |
Accumulated Amortization | 9,580 |  | 9,580 |  |
Net Intangible Assets | 3,320 |  | 3,320 |  |
Covenants Not to Compete |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |
Gross Amount | 5,832 |  | 5,832 |  |
Accumulated Amortization | 4,226 |  | 4,226 |  |
Net Intangible Assets | $ 1,606 |  | $ 1,606 |  |
Maximum [Member] | Customer Relationships [Member] |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |
Amortization period (years) |  |  | 20 years |  |
Maximum [Member] | Tradename |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |
Amortization period (years) |  |  | 6 years |  |
Maximum [Member] | Covenants Not to Compete |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |
Amortization period (years) |  |  | 10 years |  |
Minimum [Member] | Customer Relationships [Member] |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |
Amortization period (years) |  |  | 15 years |  |
Minimum [Member] | Tradename |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |
Amortization period (years) |  |  | 6 months |  |
Minimum [Member] | Covenants Not to Compete |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |
Amortization period (years) |  |  | 1 year |  |

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