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LONG-TERM DEBT (Details) (USD $) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2014 | Sep. 30, 2014 | Jun. 30, 2014 | Mar. 31, 2014 | Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Borrowings [Abstract] |  |  |  |  |  |  |  |  |  |
Total Debt | $ 411,516,000 us-gaap_LongTermDebt |  |  |  |  |  |  | $ 411,516,000 us-gaap_LongTermDebt | $ 194,585,000 us-gaap_LongTermDebt |
Less: Current maturities | (38,608,000)us-gaap_LongTermDebtCurrent |  |  |  |  |  |  | (38,608,000)us-gaap_LongTermDebtCurrent | (26,213,000)us-gaap_LongTermDebtCurrent |
Total Long-term Debt | 372,908,000 us-gaap_LongTermDebtNoncurrent |  |  |  |  |  |  | 372,908,000 us-gaap_LongTermDebtNoncurrent | 168,372,000 us-gaap_LongTermDebtNoncurrent |
Computation of the Leverage Ratio [Abstract] |  |  |  |  |  |  |  |  |  |
Loss before taxes |  |  |  |  |  |  |  | (25,556,000)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest | 94,717,000 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest | 85,009,000 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
Interest expense |  |  |  |  |  |  |  | 12,797,000 us-gaap_InterestExpense | 6,282,000 us-gaap_InterestExpense | 5,560,000 us-gaap_InterestExpense
Depreciation and amortization |  |  |  |  |  |  |  | 35,078,000 us-gaap_DepreciationDepletionAndAmortization |  |
Impairment expense | 117,600,000 us-gaap_GoodwillImpairmentLoss | 0 us-gaap_GoodwillImpairmentLoss | [1] | 0 us-gaap_GoodwillImpairmentLoss | [1] | 0 us-gaap_GoodwillImpairmentLoss | [1] | 117,569,000 us-gaap_GoodwillImpairmentLoss | 0 us-gaap_GoodwillImpairmentLoss | 0 us-gaap_GoodwillImpairmentLoss
Stock compensation expense |  |  |  |  |  |  |  | 3,560,000 us-gaap_ShareBasedCompensation |  |
Pro forma acquisition EBITDA |  |  |  |  |  |  |  | 850,000 dxpe_ProFormaAcquisitionEbitda |  |
Other adjustments |  |  |  |  |  |  |  | (250,000)dxpe_OtherAdjustmentsEarningsBeforeInterestTaxesDepreciationAndAmortization |  |
Defined EBITDA |  |  |  |  |  |  |  | 144,048,000 dxpe_DefinedEbitda |  |
Total long-term debt, including current maturities | 411,516,000 us-gaap_LongTermDebt |  |  |  |  |  |  | 411,516,000 us-gaap_LongTermDebt | 194,585,000 us-gaap_LongTermDebt |
Outstanding letters of credit | 5,680,000 us-gaap_LettersOfCreditOutstandingAmount |  |  |  |  |  |  | 5,680,000 us-gaap_LettersOfCreditOutstandingAmount |  |
Defined indebtedness | 417,196,000 dxpe_DefinedIndebtedness |  |  |  |  |  |  | 417,196,000 dxpe_DefinedIndebtedness |  |
Leverage Ratio (B)/(A) | 2.90 dxpe_LeverageRatio |  |  |  |  |  |  | 2.90 dxpe_LeverageRatio |  |
Computation of the Asset Coverage Ratio [Abstract] |  |  |  |  |  |  |  |  |  |
Credit facility outstanding balance | 411,516,000 us-gaap_LongTermDebt |  |  |  |  |  |  | 411,516,000 us-gaap_LongTermDebt | 194,585,000 us-gaap_LongTermDebt |
Defined indebtedness | 193,443,000 dxpe_DefinedIndebtednessForComputationOfAssetCoverageRatio |  |  |  |  |  |  | 193,443,000 dxpe_DefinedIndebtednessForComputationOfAssetCoverageRatio |  |
Accounts receivable, net | 239,236,000 us-gaap_AccountsReceivableNetCurrent |  |  |  |  |  |  | 239,236,000 us-gaap_AccountsReceivableNetCurrent | 186,854,000 us-gaap_AccountsReceivableNetCurrent |
Percentage of net accounts receivable for calculating asset coverage ratio (in hundredths) |  |  |  |  |  |  |  | 85.00%dxpe_PercentageOfNetAccountsReceivableForCalculatingAssetCoverageRatio |  |
Accounts receivable amount for computation of asset coverage ratio | 203,351,000 dxpe_AccountsReceivableAmountForComputationOfAssetCoverageRatio |  |  |  |  |  |  | 203,351,000 dxpe_AccountsReceivableAmountForComputationOfAssetCoverageRatio |  |
Inventory | 115,658,000 us-gaap_InventoryNet |  |  |  |  |  |  | 115,658,000 us-gaap_InventoryNet | 105,271,000 us-gaap_InventoryNet |
Percentage of net inventory for calculating asset coverage ratio (in hundredths) |  |  |  |  |  |  |  | 65.00%dxpe_PercentageOfNetInventoryForCalculatingAssetCoverageRatio |  |
Inventory amount for computation of asset coverage ratio | 75,178,000 dxpe_InventoryAmountForComputationOfAssetCoverageRatio |  |  |  |  |  |  | 75,178,000 dxpe_InventoryAmountForComputationOfAssetCoverageRatio |  |
Gross amount utilized for computation of asset coverage ratio | 278,529,000 dxpe_GrossAmountForComputationOfAssetCoverageRatio |  |  |  |  |  |  | 278,529,000 dxpe_GrossAmountForComputationOfAssetCoverageRatio |  |
Asset Coverage Ratio | 1.44 dxpe_AssetCoverageRatio |  |  |  |  |  |  | 1.44 dxpe_AssetCoverageRatio |  |
Long-term Debt, Fiscal Year Maturity [Abstract] |  |  |  |  |  |  |  |  |  |
2015 | 38,608,000 us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths |  |  |  |  |  |  | 38,608,000 us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths |  |
2016 | 50,831,000 us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo |  |  |  |  |  |  | 50,831,000 us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo |  |
2017 | 63,356,000 us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree |  |  |  |  |  |  | 63,356,000 us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree |  |
2018 | 63,381,000 us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour |  |  |  |  |  |  | 63,381,000 us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour |  |
2019 | 194,350,000 us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive |  |  |  |  |  |  | 194,350,000 us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive |  |
Thereafter | 990,000 us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive |  |  |  |  |  |  | 990,000 us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive |  |
Line of Credit [Member] |  |  |  |  |  |  |  |  |  |
Borrowings [Abstract] |  |  |  |  |  |  |  |  |  |
Total Debt | 193,443,000 us-gaap_LongTermDebt / us-gaap_CreditFacilityAxis = us-gaap_LineOfCreditMember |  |  |  |  |  |  | 193,443,000 us-gaap_LongTermDebt / us-gaap_CreditFacilityAxis = us-gaap_LineOfCreditMember | 76,849,000 us-gaap_LongTermDebt / us-gaap_CreditFacilityAxis = us-gaap_LineOfCreditMember |
Computation of the Leverage Ratio [Abstract] |  |  |  |  |  |  |  |  |  |
Total long-term debt, including current maturities | 193,443,000 us-gaap_LongTermDebt / us-gaap_CreditFacilityAxis = us-gaap_LineOfCreditMember |  |  |  |  |  |  | 193,443,000 us-gaap_LongTermDebt / us-gaap_CreditFacilityAxis = us-gaap_LineOfCreditMember | 76,849,000 us-gaap_LongTermDebt / us-gaap_CreditFacilityAxis = us-gaap_LineOfCreditMember |
Computation of the Asset Coverage Ratio [Abstract] |  |  |  |  |  |  |  |  |  |
Credit facility outstanding balance | 193,443,000 us-gaap_LongTermDebt / us-gaap_CreditFacilityAxis = us-gaap_LineOfCreditMember |  |  |  |  |  |  | 193,443,000 us-gaap_LongTermDebt / us-gaap_CreditFacilityAxis = us-gaap_LineOfCreditMember | 76,849,000 us-gaap_LongTermDebt / us-gaap_CreditFacilityAxis = us-gaap_LineOfCreditMember |
Term Loan [Member] |  |  |  |  |  |  |  |  |  |
Borrowings [Abstract] |  |  |  |  |  |  |  |  |  |
Total Debt | 212,500,000 us-gaap_LongTermDebt / us-gaap_CreditFacilityAxis = dxpe_TermLoanMember |  |  |  |  |  |  | 212,500,000 us-gaap_LongTermDebt / us-gaap_CreditFacilityAxis = dxpe_TermLoanMember | 109,375,000 us-gaap_LongTermDebt / us-gaap_CreditFacilityAxis = dxpe_TermLoanMember |
Computation of the Leverage Ratio [Abstract] |  |  |  |  |  |  |  |  |  |
Total long-term debt, including current maturities | 212,500,000 us-gaap_LongTermDebt / us-gaap_CreditFacilityAxis = dxpe_TermLoanMember |  |  |  |  |  |  | 212,500,000 us-gaap_LongTermDebt / us-gaap_CreditFacilityAxis = dxpe_TermLoanMember | 109,375,000 us-gaap_LongTermDebt / us-gaap_CreditFacilityAxis = dxpe_TermLoanMember |
Computation of the Asset Coverage Ratio [Abstract] |  |  |  |  |  |  |  |  |  |
Credit facility outstanding balance | 212,500,000 us-gaap_LongTermDebt / us-gaap_CreditFacilityAxis = dxpe_TermLoanMember |  |  |  |  |  |  | 212,500,000 us-gaap_LongTermDebt / us-gaap_CreditFacilityAxis = dxpe_TermLoanMember | 109,375,000 us-gaap_LongTermDebt / us-gaap_CreditFacilityAxis = dxpe_TermLoanMember |
Promissory Note Payable [Member] |  |  |  |  |  |  |  |  |  |
Borrowings [Abstract] |  |  |  |  |  |  |  |  |  |
Total Debt | 5,216,000 us-gaap_LongTermDebt / us-gaap_CreditFacilityAxis = us-gaap_NotesPayableOtherPayablesMember |  |  |  |  |  |  | 5,216,000 us-gaap_LongTermDebt / us-gaap_CreditFacilityAxis = us-gaap_NotesPayableOtherPayablesMember | 6,000,000 us-gaap_LongTermDebt / us-gaap_CreditFacilityAxis = us-gaap_NotesPayableOtherPayablesMember |
Monthly installments (in hundredths) | 2.90%dxpe_DebtInstrumentPeriodicPaymentMonthlyPercentage / us-gaap_CreditFacilityAxis = us-gaap_NotesPayableOtherPayablesMember |  |  |  |  |  |  | 2.90%dxpe_DebtInstrumentPeriodicPaymentMonthlyPercentage / us-gaap_CreditFacilityAxis = us-gaap_NotesPayableOtherPayablesMember |  |
Computation of the Leverage Ratio [Abstract] |  |  |  |  |  |  |  |  |  |
Total long-term debt, including current maturities | 5,216,000 us-gaap_LongTermDebt / us-gaap_CreditFacilityAxis = us-gaap_NotesPayableOtherPayablesMember |  |  |  |  |  |  | 5,216,000 us-gaap_LongTermDebt / us-gaap_CreditFacilityAxis = us-gaap_NotesPayableOtherPayablesMember | 6,000,000 us-gaap_LongTermDebt / us-gaap_CreditFacilityAxis = us-gaap_NotesPayableOtherPayablesMember |
Computation of the Asset Coverage Ratio [Abstract] |  |  |  |  |  |  |  |  |  |
Credit facility outstanding balance | 5,216,000 us-gaap_LongTermDebt / us-gaap_CreditFacilityAxis = us-gaap_NotesPayableOtherPayablesMember |  |  |  |  |  |  | 5,216,000 us-gaap_LongTermDebt / us-gaap_CreditFacilityAxis = us-gaap_NotesPayableOtherPayablesMember | 6,000,000 us-gaap_LongTermDebt / us-gaap_CreditFacilityAxis = us-gaap_NotesPayableOtherPayablesMember |
Unsecured Subordinated Notes Payable [Member] |  |  |  |  |  |  |  |  |  |
Borrowings [Abstract] |  |  |  |  |  |  |  |  |  |
Total Debt | 357,000 us-gaap_LongTermDebt / us-gaap_CreditFacilityAxis = dxpe_UnsecuredSubordinatedNotesPayableMember |  |  |  |  |  |  | 357,000 us-gaap_LongTermDebt / us-gaap_CreditFacilityAxis = dxpe_UnsecuredSubordinatedNotesPayableMember | 2,361,000 us-gaap_LongTermDebt / us-gaap_CreditFacilityAxis = dxpe_UnsecuredSubordinatedNotesPayableMember |
Quarterly installments (in hundredths) | 5.00%dxpe_DebtInstrumentPeriodicPaymentQuarterlyPercentage / us-gaap_CreditFacilityAxis = dxpe_UnsecuredSubordinatedNotesPayableMember |  |  |  |  |  |  | 5.00%dxpe_DebtInstrumentPeriodicPaymentQuarterlyPercentage / us-gaap_CreditFacilityAxis = dxpe_UnsecuredSubordinatedNotesPayableMember |  |
Computation of the Leverage Ratio [Abstract] |  |  |  |  |  |  |  |  |  |
Total long-term debt, including current maturities | 357,000 us-gaap_LongTermDebt / us-gaap_CreditFacilityAxis = dxpe_UnsecuredSubordinatedNotesPayableMember |  |  |  |  |  |  | 357,000 us-gaap_LongTermDebt / us-gaap_CreditFacilityAxis = dxpe_UnsecuredSubordinatedNotesPayableMember | 2,361,000 us-gaap_LongTermDebt / us-gaap_CreditFacilityAxis = dxpe_UnsecuredSubordinatedNotesPayableMember |
Computation of the Asset Coverage Ratio [Abstract] |  |  |  |  |  |  |  |  |  |
Credit facility outstanding balance | 357,000 us-gaap_LongTermDebt / us-gaap_CreditFacilityAxis = dxpe_UnsecuredSubordinatedNotesPayableMember |  |  |  |  |  |  | 357,000 us-gaap_LongTermDebt / us-gaap_CreditFacilityAxis = dxpe_UnsecuredSubordinatedNotesPayableMember | 2,361,000 us-gaap_LongTermDebt / us-gaap_CreditFacilityAxis = dxpe_UnsecuredSubordinatedNotesPayableMember |
Revolving Credit Facility [Member] |  |  |  |  |  |  |  |  |  |
Borrowings [Abstract] |  |  |  |  |  |  |  |  |  |
Commitment fee (in hundredths) |  |  |  |  |  |  |  | 0.35%us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage / us-gaap_CreditFacilityAxis = us-gaap_RevolvingCreditFacilityMember |  |
Maximum consolidated leverage ratio |  |  |  |  |  |  |  | 3.25 dxpe_MaximumConsolidatedLeverageRatioRequiredAfterSpecifiedPeriod / us-gaap_CreditFacilityAxis = us-gaap_RevolvingCreditFacilityMember |  |
Minimum asset coverage ratio |  |  |  |  |  |  |  | 1.0 dxpe_MinimumAssetCoverageRatio / us-gaap_CreditFacilityAxis = us-gaap_RevolvingCreditFacilityMember |  |
Minimum consolidated fixed charge coverage ratio |  |  |  |  |  |  |  | 1.25 dxpe_MinimumConsolidatedFixedChargeCoverageRatio / us-gaap_CreditFacilityAxis = us-gaap_RevolvingCreditFacilityMember |  |
Fixed charge coverage ratio | 2.07 dxpe_FixedChargeCoverageRatio / us-gaap_CreditFacilityAxis = us-gaap_RevolvingCreditFacilityMember |  |  |  |  |  |  | 2.07 dxpe_FixedChargeCoverageRatio / us-gaap_CreditFacilityAxis = us-gaap_RevolvingCreditFacilityMember |  |
Wells Fargo Bank, National Association [Member] | Line of Credit [Member] |  |  |  |  |  |  |  |  |  |
Borrowings [Abstract] |  |  |  |  |  |  |  |  |  |
Maximum borrowing capacity | 350,000,000 us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity / us-gaap_CreditFacilityAxis = us-gaap_LineOfCreditMember / us-gaap_LineOfCreditFacilityAxis = dxpe_WellsFargoBankNationalAssociationMember |  |  |  |  |  |  | 350,000,000 us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity / us-gaap_CreditFacilityAxis = us-gaap_LineOfCreditMember / us-gaap_LineOfCreditFacilityAxis = dxpe_WellsFargoBankNationalAssociationMember |  |
Wells Fargo Bank, National Association [Member] | Term Loan [Member] |  |  |  |  |  |  |  |  |  |
Borrowings [Abstract] |  |  |  |  |  |  |  |  |  |
Maximum borrowing capacity | 212,500,000 us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity / us-gaap_CreditFacilityAxis = dxpe_TermLoanMember / us-gaap_LineOfCreditFacilityAxis = dxpe_WellsFargoBankNationalAssociationMember |  |  |  |  |  |  | 212,500,000 us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity / us-gaap_CreditFacilityAxis = dxpe_TermLoanMember / us-gaap_LineOfCreditFacilityAxis = dxpe_WellsFargoBankNationalAssociationMember |  |
Wells Fargo Bank, National Association [Member] | Term Loan [Member] | LIBOR [Member] |  |  |  |  |  |  |  |  |  |
Borrowings [Abstract] |  |  |  |  |  |  |  |  |  |
Base rate |  |  |  |  |  |  |  | LIBOR |  |
Wells Fargo Bank, National Association [Member] | Revolving Credit Facility [Member] |  |  |  |  |  |  |  |  |  |
Borrowings [Abstract] |  |  |  |  |  |  |  |  |  |
Available for borrowing under the facility | 51,000,000 us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity / us-gaap_CreditFacilityAxis = us-gaap_RevolvingCreditFacilityMember / us-gaap_LineOfCreditFacilityAxis = dxpe_WellsFargoBankNationalAssociationMember |  |  |  |  |  |  | 51,000,000 us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity / us-gaap_CreditFacilityAxis = us-gaap_RevolvingCreditFacilityMember / us-gaap_LineOfCreditFacilityAxis = dxpe_WellsFargoBankNationalAssociationMember |  |
Expiration date |  |  |  |  |  |  |  | Jan. 02, 2019 |  |
Wells Fargo Bank, National Association [Member] | Revolving Credit Facility [Member] | Minimum [Member] |  |  |  |  |  |  |  |  |  |
Borrowings [Abstract] |  |  |  |  |  |  |  |  |  |
Commitment fee (in hundredths) |  |  |  |  |  |  |  | 0.20%us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage / us-gaap_CreditFacilityAxis = us-gaap_RevolvingCreditFacilityMember / us-gaap_LineOfCreditFacilityAxis = dxpe_WellsFargoBankNationalAssociationMember / us-gaap_RangeAxis = us-gaap_MinimumMember |  |
Wells Fargo Bank, National Association [Member] | Revolving Credit Facility [Member] | Maximum [Member] |  |  |  |  |  |  |  |  |  |
Borrowings [Abstract] |  |  |  |  |  |  |  |  |  |
Commitment fee (in hundredths) |  |  |  |  |  |  |  | 0.45%us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage / us-gaap_CreditFacilityAxis = us-gaap_RevolvingCreditFacilityMember / us-gaap_LineOfCreditFacilityAxis = dxpe_WellsFargoBankNationalAssociationMember / us-gaap_RangeAxis = us-gaap_MaximumMember |  |
Wells Fargo Bank, National Association [Member] | Revolving Credit Facility [Member] | LIBOR [Member] |  |  |  |  |  |  |  |  |  |
Borrowings [Abstract] |  |  |  |  |  |  |  |  |  |
Basis spread on base rate (in hundredths) |  |  |  |  |  |  |  | 2.00%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 / us-gaap_CreditFacilityAxis = us-gaap_RevolvingCreditFacilityMember / us-gaap_LineOfCreditFacilityAxis = dxpe_WellsFargoBankNationalAssociationMember / dxpe_ReferenceRateAxis = dxpe_LiborMember |  |
Amount outstanding | $ 405,900,000 us-gaap_LineOfCredit / us-gaap_CreditFacilityAxis = us-gaap_RevolvingCreditFacilityMember / us-gaap_LineOfCreditFacilityAxis = dxpe_WellsFargoBankNationalAssociationMember / dxpe_ReferenceRateAxis = dxpe_LiborMember |  |  |  |  |  |  | $ 405,900,000 us-gaap_LineOfCredit / us-gaap_CreditFacilityAxis = us-gaap_RevolvingCreditFacilityMember / us-gaap_LineOfCreditFacilityAxis = dxpe_WellsFargoBankNationalAssociationMember / dxpe_ReferenceRateAxis = dxpe_LiborMember |  |
Weighted average interest rate (in hundredths) | 2.20%us-gaap_LongtermDebtWeightedAverageInterestRate / us-gaap_CreditFacilityAxis = us-gaap_RevolvingCreditFacilityMember / us-gaap_LineOfCreditFacilityAxis = dxpe_WellsFargoBankNationalAssociationMember / dxpe_ReferenceRateAxis = dxpe_LiborMember |  |  |  |  |  |  | 2.20%us-gaap_LongtermDebtWeightedAverageInterestRate / us-gaap_CreditFacilityAxis = us-gaap_RevolvingCreditFacilityMember / us-gaap_LineOfCreditFacilityAxis = dxpe_WellsFargoBankNationalAssociationMember / dxpe_ReferenceRateAxis = dxpe_LiborMember |  |
Wells Fargo Bank, National Association [Member] | Revolving Credit Facility [Member] | LIBOR or CDOR [Member] |  |  |  |  |  |  |  |  |  |
Borrowings [Abstract] |  |  |  |  |  |  |  |  |  |
Base rate |  |  |  |  |  |  |  | LIBOR or CDOR |  |
Wells Fargo Bank, National Association [Member] | Revolving Credit Facility [Member] | LIBOR or CDOR [Member] | Minimum [Member] |  |  |  |  |  |  |  |  |  |
Borrowings [Abstract] |  |  |  |  |  |  |  |  |  |
Basis spread on base rate (in hundredths) |  |  |  |  |  |  |  | 1.25%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 / us-gaap_CreditFacilityAxis = us-gaap_RevolvingCreditFacilityMember / us-gaap_LineOfCreditFacilityAxis = dxpe_WellsFargoBankNationalAssociationMember / us-gaap_RangeAxis = us-gaap_MinimumMember / dxpe_ReferenceRateAxis = dxpe_LiborOrCdorMember |  |
Wells Fargo Bank, National Association [Member] | Revolving Credit Facility [Member] | LIBOR or CDOR [Member] | Maximum [Member] |  |  |  |  |  |  |  |  |  |
Borrowings [Abstract] |  |  |  |  |  |  |  |  |  |
Basis spread on base rate (in hundredths) |  |  |  |  |  |  |  | 2.50%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 / us-gaap_CreditFacilityAxis = us-gaap_RevolvingCreditFacilityMember / us-gaap_LineOfCreditFacilityAxis = dxpe_WellsFargoBankNationalAssociationMember / us-gaap_RangeAxis = us-gaap_MaximumMember / dxpe_ReferenceRateAxis = dxpe_LiborOrCdorMember |  |
Wells Fargo Bank, National Association [Member] | Revolving Credit Facility [Member] | Prime rate [Member] |  |  |  |  |  |  |  |  |  |
Borrowings [Abstract] |  |  |  |  |  |  |  |  |  |
Base rate |  |  |  |  |  |  |  | prime |  |
Basis spread on base rate (in hundredths) |  |  |  |  |  |  |  | 1.00%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 / us-gaap_CreditFacilityAxis = us-gaap_RevolvingCreditFacilityMember / us-gaap_LineOfCreditFacilityAxis = dxpe_WellsFargoBankNationalAssociationMember / dxpe_ReferenceRateAxis = us-gaap_PrimeRateMember |  |
Wells Fargo Bank, National Association [Member] | Revolving Credit Facility [Member] | Prime rate [Member] | Minimum [Member] |  |  |  |  |  |  |  |  |  |
Borrowings [Abstract] |  |  |  |  |  |  |  |  |  |
Basis spread on base rate (in hundredths) |  |  |  |  |  |  |  | 0.25%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 / us-gaap_CreditFacilityAxis = us-gaap_RevolvingCreditFacilityMember / us-gaap_LineOfCreditFacilityAxis = dxpe_WellsFargoBankNationalAssociationMember / us-gaap_RangeAxis = us-gaap_MinimumMember / dxpe_ReferenceRateAxis = us-gaap_PrimeRateMember |  |
Wells Fargo Bank, National Association [Member] | Revolving Credit Facility [Member] | Prime rate [Member] | Maximum [Member] |  |  |  |  |  |  |  |  |  |
Borrowings [Abstract] |  |  |  |  |  |  |  |  |  |
Basis spread on base rate (in hundredths) |  |  |  |  |  |  |  | 1.50%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 / us-gaap_CreditFacilityAxis = us-gaap_RevolvingCreditFacilityMember / us-gaap_LineOfCreditFacilityAxis = dxpe_WellsFargoBankNationalAssociationMember / us-gaap_RangeAxis = us-gaap_MaximumMember / dxpe_ReferenceRateAxis = us-gaap_PrimeRateMember |  |
[1] | During the fourth quarter of 2014, DXP finalized its purchase accounting for customer relationships for the acquisition of B27 and amortized the customer relationships on an accelerated basis. The revision increased amortization expense by $1.0 million per quarter.

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- Definition Earnings before interest, taxes, depreciation, and amortization. It measures a company's financial performance by computing earnings from core business operations, without including the effects of capital structure, tax rates and depreciation policies. It is used as a proxy for a company's operating cash flow and is not defined under GAAP. EBITDA is often used to value a company, with the enterprise value of a company calculated as a multiple of its EBITDA. + References No definition available. + Details
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- Definition A ratio that indicates a firm's ability to satisfy fixed financing expenses, such as interest and leases. + References No definition available. + Details
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- Definition Refers to gross amount utilized for computation of asset coverage ratio. + References No definition available. + Details
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- Definition Refers to inventory amount utilized for computation of asset coverage ratio. + References No definition available. + Details
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- Definition A ratio used to measure a company's mix of operating costs, giving an idea of how changes in output will affect operating income. + References No definition available. + Details
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- Definition The maximum consolidated leverage ratio required after specified period as a multiple under the existing debt covenant. + References No definition available. + Details
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- Definition The minimum asset coverage ratio related to the existing debt covenant. + References No definition available. + Details
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- Definition The minimum consolidated fixed charge coverage ratio required under the existing debt covenant. + References No definition available. + Details
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- Definition Other adjustments for calculation of earnings before interest, taxes, depreciation and amortization including amounts relating to the accrual for closed locations. + References No definition available. + Details
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- Definition The percentage of net accounts receivable for calculating asset coverage ratio related to the existing debt covenant. + References No definition available. + Details
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- Definition Amount due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer), for goods or services (including trade receivables) that have been delivered or sold in the normal course of business, reduced to the estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection. + 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 210.5-02.3-4) -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 3 -Subparagraph a(1) -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 4 -Article 5 + Details
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- Definition Percentage points added to the reference rate to compute the variable rate on the debt instrument. + References No definition available. + Details
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- Definition The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 + Details
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- Definition Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13854-109267 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13777-109266 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 + Details
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- Definition This element represents the income or loss from continuing operations attributable to the economic entity which may also be defined as revenue less expenses from ongoing operations, after income or loss from equity method investments, but before income taxes, extraordinary items, and noncontrolling interest. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 940 -SubTopic 20 -Section 25 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=35710027&loc=d3e41242-110953 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 10 -Article 5 + Details
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- Definition Amount of the cost of borrowed funds accounted for as interest expense. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6450988&loc=d3e26243-108391 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04.9) -URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 9 -Article 9 + Details
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- Definition Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer. + 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 210.5-02.6(a)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 330 -SubTopic 10 -Section 35 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6386567&loc=d3e3927-108312 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 45 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=28358313&loc=d3e6676-107765 + 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 The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.16) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 20, 22 -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.16) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 + Details
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- Definition Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any 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 Date the credit facility terminates, in CCYY-MM-DD format. + 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 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 The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility. + References No definition available. + Details
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- Definition Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 16 -Article 7 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 210.5-02.22) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.16) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 16 -Article 9 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 20, 22 -Article 5 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.16) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 + Details
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- Definition Amount of long-term debt, after unamortized discount or premium, scheduled to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. + 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 210.5-02.19,20) -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 20 -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19 -Article 5 + Details
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- Definition The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 + Details
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