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GOODWILL AND INTANGIBLE ASSETS - Intangible (Details) - USD ($) $ in Thousands |  |  | 12 Months Ended |
--- | --- | --- | --- | ---
Oct. 01, 2021 | Oct. 01, 2020 | Dec. 31, 2021 | Dec. 31, 2019 | Dec. 31, 2020
Finite-lived intangible assets |  |  |  |  |
Weighted Average Amortization Period |  |  | 11 years |  |
Cost |  |  | $ 130,656 |  | $ 53,701
Accumulated Amortization |  |  | 36,376 |  | 31,020
Net Value |  |  | 94,280 |  | 22,681
Total intangible assets |  |  |  |  |
Cost |  |  | 162,956 |  | 86,001
Net Value |  |  | 126,580 |  | 54,981
Impairment Assessment of Intangible Assets |  |  |  |  |
Long-lived assets impairment |  |  |  | $ 6,500 |
Impairment of indefinite-lived intangible assets | $ 0 | $ 0 |  |  |
ArcBest |  |  |  |  |
Impairment Assessment of Intangible Assets |  |  |  |  |
Long-lived assets impairment |  |  |  | 6,500 |
Revenue equipment | ArcBest |  |  |  |  |
Impairment Assessment of Intangible Assets |  |  |  |  |
Impairment of revenue equipment |  |  |  | 500 |
Trade name |  |  |  |  |
Indefinite-lived intangible assets |  |  |  |  |
Net Value |  |  | $ 32,300 |  | 32,300
Customer relationships |  |  |  |  |
Finite-lived intangible assets |  |  |  |  |
Weighted Average Amortization Period |  |  | 12 years |  |
Cost |  |  | $ 100,321 |  | 52,721
Accumulated Amortization |  |  | 35,072 |  | 30,477
Net Value |  |  | $ 65,249 |  | 22,244
Customer relationships | ArcBest |  |  |  |  |
Impairment Assessment of Intangible Assets |  |  |  |  |
Impairment of finite-lived intangible assets |  |  |  | $ 6,000 |
Other intangible assets |  |  |  |  |
Finite-lived intangible assets |  |  |  |  |
Weighted Average Amortization Period |  |  | 8 years |  |
Cost |  |  | $ 30,335 |  | 980
Accumulated Amortization |  |  | 1,304 |  | 543
Net Value |  |  | $ 29,031 |  | $ 437

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