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GOODWILL AND INTANGIBLE ASSETS (Goodwill) (Details) $ in Thousands | 12 Months Ended
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Dec. 31, 2019 USD ($)
Goodwill by reportable operating segment |
Balance at the beginning of the period | $ 108,320
Goodwill impairment | (20,000)
Balance at the end of the period | 88,320
Accumulated impairment | (20,000)
ArcBest |
Goodwill by reportable operating segment |
Balance at the beginning of the period | 107,690
Goodwill impairment | (20,000)
Balance at the end of the period | 87,690
Accumulated impairment | (20,000)
FleetNet |
Goodwill by reportable operating segment |
Balance at the beginning of the period | 630
Balance at the end of the period | $ 630

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