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LONG-TERM DEBT (Details) (USD $) | 3 Months Ended |
--- | --- | ---
Mar. 31, 2015 | Dec. 31, 2014
Borrowings [Abstract] |  |
Long-term debt | 402,400,000 us-gaap_LongTermDebt | $ 408,802,000 us-gaap_LongTermDebt
Less unamortized debt issuance costs | (2,425,000)us-gaap_DebtInstrumentUnamortizedDiscountPremiumNet | (2,714,000)us-gaap_DebtInstrumentUnamortizedDiscountPremiumNet
Less: Current portion | (41,603,000)us-gaap_LongTermDebtCurrent | (38,608,000)us-gaap_LongTermDebtCurrent
Long-term debt, less current maturities | 360,797,000 us-gaap_LongTermDebtNoncurrent | 370,194,000 us-gaap_LongTermDebtNoncurrent
Line of Credit [Member] |  |
Borrowings [Abstract] |  |
Long-term debt | 196,519,000 us-gaap_LongTermDebt / us-gaap_CreditFacilityAxis = us-gaap_LineOfCreditMember | 193,443,000 us-gaap_LongTermDebt / us-gaap_CreditFacilityAxis = us-gaap_LineOfCreditMember
Term Loan [Member] |  |
Borrowings [Abstract] |  |
Long-term debt | 203,125,000 us-gaap_LongTermDebt / us-gaap_CreditFacilityAxis = dxpe_TermLoanMember | 212,500,000 us-gaap_LongTermDebt / us-gaap_CreditFacilityAxis = dxpe_TermLoanMember
Promissory Note Payable [Member] |  |
Borrowings [Abstract] |  |
Long-term debt | 5,016,000 us-gaap_LongTermDebt / us-gaap_CreditFacilityAxis = us-gaap_CommercialPaperMember | 5,216,000 us-gaap_LongTermDebt / us-gaap_CreditFacilityAxis = us-gaap_CommercialPaperMember
Quarterly installments (in hundredths) | 2.90%dxpe_DebtInstrumentPeriodicPaymentQuarterlyPercentage / us-gaap_CreditFacilityAxis = us-gaap_CommercialPaperMember | 2.90%dxpe_DebtInstrumentPeriodicPaymentQuarterlyPercentage / us-gaap_CreditFacilityAxis = us-gaap_CommercialPaperMember
Unsecured Subordinated Notes Payable [Member] |  |
Borrowings [Abstract] |  |
Long-term debt | 165,000 us-gaap_LongTermDebt / us-gaap_CreditFacilityAxis = dxpe_UnsecuredSubordinatedNotesPayableMember | 357,000 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
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 |
Wells Fargo Bank, National Association [Member] | Line of Credit [Member] | LIBOR [Member] |  |
Borrowings [Abstract] |  |
Basis spread on base rate (in hundredths) | 2.00%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 / us-gaap_CreditFacilityAxis = us-gaap_LineOfCreditMember / us-gaap_LineOfCreditFacilityAxis = dxpe_WellsFargoBankNationalAssociationMember / us-gaap_VariableRateAxis = dxpe_LiborMember |
Wells Fargo Bank, National Association [Member] | Line of Credit [Member] | Prime rate [Member] |  |
Borrowings [Abstract] |  |
Basis spread on base rate (in hundredths) | 1.00%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 / us-gaap_CreditFacilityAxis = us-gaap_LineOfCreditMember / us-gaap_LineOfCreditFacilityAxis = dxpe_WellsFargoBankNationalAssociationMember / us-gaap_VariableRateAxis = us-gaap_PrimeRateMember |
Wells Fargo Bank, National Association [Member] | Revolving Credit Facility [Member] |  |
Borrowings [Abstract] |  |
Commitment fee (in hundredths) | 0.35%us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage / us-gaap_CreditFacilityAxis = us-gaap_RevolvingCreditFacilityMember / us-gaap_LineOfCreditFacilityAxis = dxpe_WellsFargoBankNationalAssociationMember |
Available for borrowing under the facility | 41,300,000 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] |  |
Base rate | LIBOR |
Amount outstanding | 399,600,000 us-gaap_LineOfCredit / us-gaap_CreditFacilityAxis = us-gaap_RevolvingCreditFacilityMember / us-gaap_LineOfCreditFacilityAxis = dxpe_WellsFargoBankNationalAssociationMember / us-gaap_VariableRateAxis = dxpe_LiborMember |
Weighted average interest rate (in hundredths) | 2.20%us-gaap_LongtermDebtWeightedAverageInterestRate / us-gaap_CreditFacilityAxis = us-gaap_RevolvingCreditFacilityMember / us-gaap_LineOfCreditFacilityAxis = dxpe_WellsFargoBankNationalAssociationMember / us-gaap_VariableRateAxis = dxpe_LiborMember |
Wells Fargo Bank, National Association [Member] | Revolving Credit Facility [Member] | LIBOR [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 / us-gaap_VariableRateAxis = dxpe_LiborMember |
Wells Fargo Bank, National Association [Member] | Revolving Credit Facility [Member] | LIBOR [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 / us-gaap_VariableRateAxis = dxpe_LiborMember |
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 / us-gaap_VariableRateAxis = 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 / us-gaap_VariableRateAxis = us-gaap_PrimeRateMember |

X
- Definition Amount of the required periodic payments including both interest and principal payments stated as a percentage of the face amount, paid quarterly. + References No definition available. + 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 reference rate for the variable rate of the debt instrument, such as LIBOR or the US Treasury rate and the maturity of the reference rate used, such as three months or six months LIBOR. + References No definition available. + Details
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- Definition The amount of debt discount (net of debt premium) that was originally recognized at the issuance of the instrument that has yet to be amortized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28555-108399 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28567-108399 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 1A -URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28541-108399 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=34725769&loc=d3e28878-108400 + 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 Carrying amount of long-term debt, net of unamortized discount or premium, excluding amounts to be repaid within one year or the normal operating cycle, if longer (current maturities). 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 210.5-02.22) -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 22 -Article 5 + Details
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- Definition Weighted average interest rate of long-term debt outstanding. + References No definition available. + Details
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