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LONG-TERM DEBT AND FINANCING ARRANGEMENTS (Assets Sec) (Details) - USD ($) $ in Thousands | Sep. 30, 2020 | Dec. 31, 2019
--- | --- | ---
Financing Arrangements |  |
Total assets securing notes payable or held under finance leases | $ 343,588 | $ 293,799
Less accumulated depreciation and amortization | 103,425 | 71,405
Net assets securing notes payable or held under finance leases | 240,163 | 222,394
Revenue equipment |  |
Financing Arrangements |  |
Total assets securing notes payable or held under finance leases | 317,318 | 265,315
Software |  |
Financing Arrangements |  |
Total assets securing notes payable or held under finance leases |  | 2,140
Service, office, and other equipment |  |
Financing Arrangements |  |
Total assets securing notes payable or held under finance leases | $ 26,270 | $ 26,344

X
- Definition Amount of accumulated depreciation and amortization on property, plant and equipment pledged to secure a debt instrument. + References No definition available. + Details
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X
- Definition The gross amount of property, plant and equipment pledged to secure a debt instrument. + References No definition available. + Details
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X
- Definition The net amount of property, plant and equipment pledged to secure a debt instrument. + References No definition available. + Details
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Namespace Prefix: | arcb_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
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X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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X
- Details
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Namespace Prefix: |
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X
- Details
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X
- Details
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