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LONG-TERM DEBT AND FINANCING ARRANGEMENTS (Details 3) (USD $) | 0 Months Ended | 3 Months Ended |  |  |
--- | --- | --- | --- | --- | ---
Jan. 02, 2015 | Mar. 31, 2015 | Dec. 31, 2014 | Feb. 01, 2015 | Jan. 31, 2015
Financing Arrangements |  |  |  |  |
Amounts collateralized by restricted funds |  | 1,386,000 us-gaap_RestrictedCashAndInvestmentsCurrent | $ 1,386,000 us-gaap_RestrictedCashAndInvestmentsCurrent |  |
Interest rate swap agreement |  |  |  |  |
Financing Arrangements |  |  |  |  |
Term of swap agreement | 5 years |  |  |  |
Notional amount |  | 50,000,000 invest_DerivativeNotionalAmount / us-gaap_DerivativeInstrumentRiskAxis = us-gaap_InterestRateSwapMember |  |  |
Fixed interest rate payments (as a percent) |  | 1.85%us-gaap_DerivativeFixedInterestRate / us-gaap_DerivativeInstrumentRiskAxis = us-gaap_InterestRateSwapMember |  |  |
Fair value included in other long-term liabilities |  | 1,200,000 us-gaap_DerivativeLiabilities / us-gaap_DerivativeInstrumentRiskAxis = us-gaap_InterestRateSwapMember | 600,000 us-gaap_DerivativeLiabilities / us-gaap_DerivativeInstrumentRiskAxis = us-gaap_InterestRateSwapMember |  |
Interest rate swap agreement | LIBOR |  |  |  |  |
Financing Arrangements |  |  |  |  |
Period of reference rate for variable rate receivable |  | 1 month |  |  |
Letter of Credit Agreements |  |  |  |  |
Financing Arrangements |  |  |  |  |
Outstanding letters of credit |  | 22,000,000 us-gaap_LettersOfCreditOutstandingAmount / us-gaap_CreditFacilityAxis = arcb_LettersOfCreditAgreementsMember |  |  |
Amounts collateralized by restricted funds |  | 1,400,000 us-gaap_RestrictedCashAndInvestmentsCurrent / us-gaap_CreditFacilityAxis = arcb_LettersOfCreditAgreementsMember |  |  |
Accounts receivable securitization program |  |  |  |  |
Financing Arrangements |  |  |  |  |
Maximum borrowing capacity |  | 100,000,000 us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity / us-gaap_LongtermDebtTypeAxis = arcb_AccountsReceivableSecuritizationProgramMember |  |  | 75,000,000 us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity / us-gaap_LongtermDebtTypeAxis = arcb_AccountsReceivableSecuritizationProgramMember
Increase in cash proceeds available |  |  |  | 25,000,000 arcb_LineOfCreditFacilityIncreaseInBorrowingCapacity / us-gaap_LongtermDebtTypeAxis = arcb_AccountsReceivableSecuritizationProgramMember |
Remaining borrowing capacity |  | 45,000,000 us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity / us-gaap_LongtermDebtTypeAxis = arcb_AccountsReceivableSecuritizationProgramMember |  |  |
Accounts receivable securitization program | Letter of Credit Agreements |  |  |  |  |
Financing Arrangements |  |  |  |  |
Outstanding letters of credit |  | 20,000,000 us-gaap_LettersOfCreditOutstandingAmount / us-gaap_CreditFacilityAxis = arcb_LettersOfCreditAgreementsMember / us-gaap_LongtermDebtTypeAxis = arcb_AccountsReceivableSecuritizationProgramMember |  |  |
Surety bonds |  |  |  |  |
Financing Arrangements |  |  |  |  |
Outstanding surety bonds under uncollateralized bond programs |  | 44,700,000 arcb_SuretyBondsAmountOutstandingUnderUncollateralizedProgram / us-gaap_LongtermDebtTypeAxis = us-gaap_SuretyBondMember |  |  |
Amended and Restated Credit Agreement |  |  |  |  |
Financing Arrangements |  |  |  |  |
Term loan balance refinanced with revolving credit facility | 70,000,000 arcb_TermLoanRefinancedWithRevolvingCreditFacility / us-gaap_DebtInstrumentAxis = arcb_AmendedAndRestatedCreditAgreementMember |  |  |  |
Additional borrowing capacity that may be requested |  | 75,000,000 arcb_LineOfCreditFacilityAdditionalBorrowingCapacity / us-gaap_DebtInstrumentAxis = arcb_AmendedAndRestatedCreditAgreementMember |  |  |
Amended and Restated Credit Agreement | Credit Facility |  |  |  |  |
Financing Arrangements |  |  |  |  |
Maximum borrowing capacity |  | 150,000,000 us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity / us-gaap_DebtInstrumentAxis = arcb_AmendedAndRestatedCreditAgreementMember / us-gaap_LongtermDebtTypeAxis = us-gaap_RevolvingCreditFacilityMember |  |  |
Amended and Restated Credit Agreement | Credit Facility | Interest rate swap agreement |  |  |  |  |
Financing Arrangements |  |  |  |  |
Amount of borrowings covered by the interest rate swap |  | 50,000,000 us-gaap_DerivativeAmountOfHedgedItem / us-gaap_DebtInstrumentAxis = arcb_AmendedAndRestatedCreditAgreementMember / us-gaap_DerivativeInstrumentRiskAxis = us-gaap_InterestRateSwapMember / us-gaap_LongtermDebtTypeAxis = us-gaap_RevolvingCreditFacilityMember |  |  |
Effective fixed interest rate on hedged borrowings (as a percent) |  | 3.10%arcb_DebtInstrumentInterestRateEffectiveFixedPercentageOnHedgedBalance / us-gaap_DebtInstrumentAxis = arcb_AmendedAndRestatedCreditAgreementMember / us-gaap_DerivativeInstrumentRiskAxis = us-gaap_InterestRateSwapMember / us-gaap_LongtermDebtTypeAxis = us-gaap_RevolvingCreditFacilityMember |  |  |
Amended and Restated Credit Agreement | Credit Facility | Letter of Credit Agreements |  |  |  |  |
Financing Arrangements |  |  |  |  |
Maximum borrowing capacity |  | 20,000,000 us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity / us-gaap_CreditFacilityAxis = arcb_LettersOfCreditAgreementsMember / us-gaap_DebtInstrumentAxis = arcb_AmendedAndRestatedCreditAgreementMember / us-gaap_LongtermDebtTypeAxis = us-gaap_RevolvingCreditFacilityMember |  |  |

X
- Definition The fixed interest rate to which the hedged balance of the variable rate funds borrowed is effectively converted by the derivative. + References No definition available. + Details
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- Definition Additional borrowing capacity that may be requested by the entity under the credit facility, subject to conditions contained in the debt agreement. + References No definition available. + Details
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- Definition Amount of increase to the maximum borrowing capacity under the credit facility. + References No definition available. + Details
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- Definition The period of the reference rate used to calculate the variable rate receivable on the interest rate derivative, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Definition Represents the total amount of outstanding surety bonds under the uncollateralized bond program related to the self-insurance program as of the reporting date. + References No definition available. + Details
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- Definition The amount of an outstanding term loan refinanced with a revolving credit facility under an amendment to the debt agreement. + References No definition available. + Details
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- Definition Aggregate notional amount specified by the derivative(s). Expressed as an absolute value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 12 -Section 13 -Sentence Column B + Details
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- Details
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- Definition Amount of the hedged item as of the balance sheet date related to the derivative. For example, the hedged balance on a debt instrument. + References No definition available. + Details
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- Definition Fixed interest rate related to the interest rate derivative. + References No definition available. + Details
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- Definition Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities not subject to a master netting arrangement and not elected to be offset. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=35750535&loc=d3e13433-108611 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41228-113958 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=35750535&loc=d3e13495-108611 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=34720828&loc=SL20225862-175312 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 45 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41271-113958 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 55 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=36459792&loc=SL20226008-175313 + Details
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- Definition Period the derivative contract is outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Definition The total amount of the contingent obligation under letters of credit outstanding as of the reporting date. + References No definition available. + Details
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- Definition Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 22 -Article 5 + Details
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- Definition Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 22 -Article 5 + Details
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- Definition The current cash, cash equivalents and investments that are restricted as to withdrawal or usage. Restrictions may include legally restricted deposits held as compensating balances against short-term borrowing arrangements, contracts entered into with others, or entity statements of intention with regard to particular deposits; however, time deposits and short-term certificates of deposit are not generally included in legally restricted deposits. Excludes compensating balance arrangements that are not agreements which legally restrict the use of cash amounts shown on the balance sheet. Includes current cash equivalents and investments that are similarly restricted as to withdrawal, usage or disposal. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 1 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.1) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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