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GOODWILL AND INTANGIBLE ASSETS (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	May 31, 2013	Apr. 30, 2014
Goodwill by reportable operating segment
Balance at the beginning of the period	$ 76,448,000us-gaap_Goodwill	$ 73,189,000us-gaap_Goodwill
Purchase accounting adjustments		1,567,000us-gaap_GoodwillPurchaseAccountingAdjustments
Goodwill acquired	630,000us-gaap_GoodwillAcquiredDuringPeriod	1,692,000us-gaap_GoodwillAcquiredDuringPeriod
Balance at the end of the period	77,078,000us-gaap_Goodwill	76,448,000us-gaap_Goodwill
Impairment of goodwill balances	0us-gaap_GoodwillImpairmentLoss	0us-gaap_GoodwillImpairmentLoss
Household Goods Moving Services (ABF Moving)
Goodwill by reportable operating segment
Balance at the beginning of the period		3,660,000us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = arcb_HouseholdGoodsMovingServicesMember
Goodwill acquired		1,692,000us-gaap_GoodwillAcquiredDuringPeriod / us-gaap_StatementBusinessSegmentsAxis = arcb_HouseholdGoodsMovingServicesMember
Balance at the end of the period	5,352,000us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = arcb_HouseholdGoodsMovingServicesMember	5,352,000us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = arcb_HouseholdGoodsMovingServicesMember
Goodwill related to acquisition expected to be fully tax deductible			1,700,000us-gaap_BusinessAcquisitionPurchasePriceAllocationGoodwillExpectedTaxDeductibleAmount / us-gaap_StatementBusinessSegmentsAxis = arcb_HouseholdGoodsMovingServicesMember
Premium Logistics (Panther)
Goodwill by reportable operating segment
Balance at the beginning of the period		69,529,000us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = arcb_PremiumLogisticsMember
Purchase accounting adjustments		1,567,000us-gaap_GoodwillPurchaseAccountingAdjustments / us-gaap_StatementBusinessSegmentsAxis = arcb_PremiumLogisticsMember
Balance at the end of the period	71,096,000us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = arcb_PremiumLogisticsMember	71,096,000us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = arcb_PremiumLogisticsMember
Emergency & Preventative Maintenance (FleetNet)
Goodwill by reportable operating segment
Goodwill acquired	630,000us-gaap_GoodwillAcquiredDuringPeriod / us-gaap_StatementBusinessSegmentsAxis = arcb_EmergencyAndPreventativeMaintenanceMember
Balance at the end of the period	630,000us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = arcb_EmergencyAndPreventativeMaintenanceMember
Goodwill related to acquisition expected to be fully tax deductible				$ 600,000us-gaap_BusinessAcquisitionPurchasePriceAllocationGoodwillExpectedTaxDeductibleAmount / us-gaap_StatementBusinessSegmentsAxis = arcb_EmergencyAndPreventativeMaintenanceMember

X

- Definition

The amount of goodwill arising from a business combination that is expected to be deductible for tax purposes.

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-Publisher FASB

-Name Accounting Standards Codification

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