INDEBTEDNESS (Details) (USD $)
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12 Months Ended |
Dec. 31, 2014
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Dec. 31, 2013
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Dec. 31, 2012
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Debt Instrument [Line Items] |
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Ratio of Indebtedness to Net Capital |
1.34us-gaap_RatioOfIndebtednessToNetCapital1 |
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Interest Coverage Ratio |
22.7dhx_InterestCoverageRatio |
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restricted payments under the Credit Agreement |
$ 5,000,000dhx_RestrictedPaymentsUnderCreditAgreement |
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Total borrowed |
110,500,000us-gaap_LongTermDebt |
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Write-off of deferred financing costs |
0us-gaap_WriteOffOfDeferredDebtIssuanceCost |
0us-gaap_WriteOffOfDeferredDebtIssuanceCost |
765,000us-gaap_WriteOffOfDeferredDebtIssuanceCost |
Long-term Debt, Fiscal Year Maturity [Abstract] |
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2015 |
2,500,000us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths |
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2016 |
5,000,000us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo |
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2017 |
5,000,000us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree |
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2018 |
98,000,000us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour |
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Total minimum payments |
110,500,000us-gaap_LongTermDebt |
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Minimum [Member] |
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Debt Instrument [Line Items] |
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Interest Coverage Ratio |
3.5dhx_InterestCoverageRatio / us-gaap_RangeAxis = us-gaap_MinimumMember |
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Maximum [Member] |
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Debt Instrument [Line Items] |
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Ratio of Indebtedness to Net Capital |
3.00us-gaap_RatioOfIndebtednessToNetCapital1 / us-gaap_RangeAxis = us-gaap_MaximumMember |
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Ratio of Indebtedness to Net Capital, Pro forma basis |
2.0dhx_RatioOfIndebtednessToNetCapitalProFormaBasis / us-gaap_RangeAxis = us-gaap_MaximumMember |
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Debt Instrument, Redemption, Period One [Member] |
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Debt Instrument [Line Items] |
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Debt Instrument, Periodic Payment |
625,000us-gaap_DebtInstrumentPeriodicPayment / us-gaap_RangeAxis = us-gaap_DebtInstrumentRedemptionPeriodOneMember |
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Debt Instrument, Redemption, Period Two [Member] |
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Debt Instrument [Line Items] |
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Debt Instrument, Periodic Payment |
1,300,000us-gaap_DebtInstrumentPeriodicPayment / us-gaap_RangeAxis = us-gaap_DebtInstrumentRedemptionPeriodTwoMember |
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Debt Instrument, Redemption, Period Three [Member] |
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Debt Instrument [Line Items] |
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Debt Instrument, Periodic Payment |
8,800,000us-gaap_DebtInstrumentPeriodicPayment / us-gaap_RangeAxis = us-gaap_DebtInstrumentRedemptionPeriodThreeMember |
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Credit Agreement [Member] |
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Debt Instrument [Line Items] |
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Face amount on debt |
65,000,000us-gaap_DebtInstrumentFaceAmount / us-gaap_DebtInstrumentAxis = dhx_CreditAgreementMember |
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Number of wholly-owned subsidiaries |
3dhx_NumberOfWhollyOwnedSubsidiaries / us-gaap_DebtInstrumentAxis = dhx_CreditAgreementMember |
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Debt issuance costs |
872,000us-gaap_DebtIssuanceCosts / us-gaap_DebtInstrumentAxis = dhx_CreditAgreementMember |
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Total borrowed |
110,500,000us-gaap_LongTermDebt / us-gaap_DebtInstrumentAxis = dhx_CreditAgreementMember |
119,000,000us-gaap_LongTermDebt / us-gaap_DebtInstrumentAxis = dhx_CreditAgreementMember |
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Long-term Debt, Fiscal Year Maturity [Abstract] |
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Total minimum payments |
110,500,000us-gaap_LongTermDebt / us-gaap_DebtInstrumentAxis = dhx_CreditAgreementMember |
119,000,000us-gaap_LongTermDebt / us-gaap_DebtInstrumentAxis = dhx_CreditAgreementMember |
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Credit Agreement [Member] | LIBOR [Member] |
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Debt Instrument [Line Items] |
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Interest margin |
2.00%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 / us-gaap_DebtInstrumentAxis = dhx_CreditAgreementMember / dhx_ReferenceRateAxis = dhx_LiborMember |
2.00%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 / us-gaap_DebtInstrumentAxis = dhx_CreditAgreementMember / dhx_ReferenceRateAxis = dhx_LiborMember |
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Credit Agreement [Member] | LIBOR [Member] | Minimum [Member] |
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Debt Instrument [Line Items] |
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Interest margin |
1.75%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 / us-gaap_DebtInstrumentAxis = dhx_CreditAgreementMember / us-gaap_RangeAxis = us-gaap_MinimumMember / dhx_ReferenceRateAxis = dhx_LiborMember |
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Credit Agreement [Member] | LIBOR [Member] | Maximum [Member] |
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Debt Instrument [Line Items] |
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Interest margin |
2.50%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 / us-gaap_DebtInstrumentAxis = dhx_CreditAgreementMember / us-gaap_RangeAxis = us-gaap_MaximumMember / dhx_ReferenceRateAxis = dhx_LiborMember |
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Credit Agreement [Member] | Base Rate [Member] | Minimum [Member] |
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Debt Instrument [Line Items] |
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Interest margin |
0.75%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 / us-gaap_DebtInstrumentAxis = dhx_CreditAgreementMember / us-gaap_RangeAxis = us-gaap_MinimumMember / dhx_ReferenceRateAxis = us-gaap_BaseRateMember |
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Credit Agreement [Member] | Base Rate [Member] | Maximum [Member] |
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Debt Instrument [Line Items] |
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Interest margin |
1.50%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 / us-gaap_DebtInstrumentAxis = dhx_CreditAgreementMember / us-gaap_RangeAxis = us-gaap_MaximumMember / dhx_ReferenceRateAxis = us-gaap_BaseRateMember |
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Previous Credit Facility [Member] |
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Debt Instrument [Line Items] |
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Write-off of deferred financing costs |
878,000us-gaap_WriteOffOfDeferredDebtIssuanceCost / us-gaap_DebtInstrumentAxis = dhx_PreviousCreditFacilityMember |
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Revolving Credit Facility [Member] |
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Debt Instrument [Line Items] |
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Maximum available to be borrowed under revolving facility |
137,000,000us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity / us-gaap_LongtermDebtTypeAxis = us-gaap_RevolvingCreditFacilityMember |
131,000,000us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity / us-gaap_LongtermDebtTypeAxis = us-gaap_RevolvingCreditFacilityMember |
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Revolving Credit Facility [Member] | Credit Agreement [Member] |
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Debt Instrument [Line Items] |
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Maximum available to be borrowed under revolving facility |
200,000,000us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity / us-gaap_DebtInstrumentAxis = dhx_CreditAgreementMember / us-gaap_LongtermDebtTypeAxis = us-gaap_RevolvingCreditFacilityMember |
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Total borrowed |
63,000,000us-gaap_LongTermDebt / us-gaap_DebtInstrumentAxis = dhx_CreditAgreementMember / us-gaap_LongtermDebtTypeAxis = us-gaap_RevolvingCreditFacilityMember |
69,000,000us-gaap_LongTermDebt / us-gaap_DebtInstrumentAxis = dhx_CreditAgreementMember / us-gaap_LongtermDebtTypeAxis = us-gaap_RevolvingCreditFacilityMember |
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Long-term Debt, Fiscal Year Maturity [Abstract] |
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Total minimum payments |
63,000,000us-gaap_LongTermDebt / us-gaap_DebtInstrumentAxis = dhx_CreditAgreementMember / us-gaap_LongtermDebtTypeAxis = us-gaap_RevolvingCreditFacilityMember |
69,000,000us-gaap_LongTermDebt / us-gaap_DebtInstrumentAxis = dhx_CreditAgreementMember / us-gaap_LongtermDebtTypeAxis = us-gaap_RevolvingCreditFacilityMember |
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Term Facility [Member] | Credit Agreement [Member] |
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Debt Instrument [Line Items] |
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Maximum available to be borrowed under revolving facility |
50,000,000us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity / us-gaap_DebtInstrumentAxis = dhx_CreditAgreementMember / us-gaap_LongtermDebtTypeAxis = dhx_TermFacilityMember |
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Total borrowed |
47,500,000us-gaap_LongTermDebt / us-gaap_DebtInstrumentAxis = dhx_CreditAgreementMember / us-gaap_LongtermDebtTypeAxis = dhx_TermFacilityMember |
50,000,000us-gaap_LongTermDebt / us-gaap_DebtInstrumentAxis = dhx_CreditAgreementMember / us-gaap_LongtermDebtTypeAxis = dhx_TermFacilityMember |
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Long-term Debt, Fiscal Year Maturity [Abstract] |
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Total minimum payments |
$ 47,500,000us-gaap_LongTermDebt / us-gaap_DebtInstrumentAxis = dhx_CreditAgreementMember / us-gaap_LongtermDebtTypeAxis = dhx_TermFacilityMember |
$ 50,000,000us-gaap_LongTermDebt / us-gaap_DebtInstrumentAxis = dhx_CreditAgreementMember / us-gaap_LongtermDebtTypeAxis = dhx_TermFacilityMember |
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