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v2.4.1.9

Supporting Financial Information - Accounts Receivable (Details) (USD $) | 3 Months Ended | 6 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Mar. 31, 2015 | Mar. 31, 2014 | Mar. 31, 2015 | Mar. 31, 2014 | Sep. 30, 2008 | Sep. 30, 2014
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Total accounts receivable | $ 3,231,000 us-gaap_AccountsReceivableGrossCurrent |  | $ 3,231,000 us-gaap_AccountsReceivableGrossCurrent |  |  | $ 12,372,000 us-gaap_AccountsReceivableGrossCurrent
Less: Allowance for doubtful accounts | 0 us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent |  | 0 us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent |  |  | 0 us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent
Accounts Receivable, Net | 3,231,000 us-gaap_AccountsReceivableNetCurrent |  | 3,231,000 us-gaap_AccountsReceivableNetCurrent |  |  | 12,372,000 us-gaap_AccountsReceivableNetCurrent
Revenue | 15,893,000 us-gaap_ContractsRevenue | 14,745,000 us-gaap_ContractsRevenue | 31,575,000 us-gaap_ContractsRevenue | 29,222,000 us-gaap_ContractsRevenue |  |
Reduction of accrued payroll related to retroactive wage and benefit payments |  |  | 8,677,000 us-gaap_LossContingencyAccrualCarryingValuePeriodIncreaseDecrease | 0 us-gaap_LossContingencyAccrualCarryingValuePeriodIncreaseDecrease |  |
Settlement of retroactive payment claim, net |  |  | (629,000)us-gaap_LossContingencyLossInPeriod | 0 us-gaap_LossContingencyLossInPeriod |  |
Billed Receivables |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Total accounts receivable | 2,695,000 us-gaap_AccountsReceivableGrossCurrent / us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis = us-gaap_BilledRevenuesMember |  | 2,695,000 us-gaap_AccountsReceivableGrossCurrent / us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis = us-gaap_BilledRevenuesMember |  |  | 2,569,000 us-gaap_AccountsReceivableGrossCurrent / us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis = us-gaap_BilledRevenuesMember
Unbilled Receivables |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Total accounts receivable | 536,000 us-gaap_AccountsReceivableGrossCurrent / us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis = us-gaap_UnbilledRevenuesMember |  | 536,000 us-gaap_AccountsReceivableGrossCurrent / us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis = us-gaap_UnbilledRevenuesMember |  |  | 9,803,000 us-gaap_AccountsReceivableGrossCurrent / us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis = us-gaap_UnbilledRevenuesMember
DVA |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Contract revenue nonrecurring |  |  |  |  | 10,800,000 dlhc_ContractRevenueNonrecurring / us-gaap_AccountsNotesLoansAndFinancingReceivablesByLegalEntityOfCounterpartyTypeAxis = dlhc_DepartmentOfVeteransAffairsMember |
Department of Labor | Unfavorable Regulatory Action |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Loss Contingency Accrual, Provision |  |  |  |  | 10,100,000 us-gaap_LossContingencyAccrualProvision / us-gaap_LossContingenciesByNatureOfContingencyAxis = us-gaap_UnfavorableRegulatoryActionMember / us-gaap_RegulatoryAgencyAxis = dlhc_DepartmentofLaborMember |
Employee-related Liabilities, Accrued Payroll Attributable to Retroactive Payment Cases | 0 dlhc_EmployeerelatedLiabilitiesAccruedPayrollAttributabletoRetroactivePaymentCases / us-gaap_LossContingenciesByNatureOfContingencyAxis = us-gaap_UnfavorableRegulatoryActionMember / us-gaap_RegulatoryAgencyAxis = dlhc_DepartmentofLaborMember |  | 0 dlhc_EmployeerelatedLiabilitiesAccruedPayrollAttributabletoRetroactivePaymentCases / us-gaap_LossContingenciesByNatureOfContingencyAxis = us-gaap_UnfavorableRegulatoryActionMember / us-gaap_RegulatoryAgencyAxis = dlhc_DepartmentofLaborMember |  |  | 8,677,000 dlhc_EmployeerelatedLiabilitiesAccruedPayrollAttributabletoRetroactivePaymentCases / us-gaap_LossContingenciesByNatureOfContingencyAxis = us-gaap_UnfavorableRegulatoryActionMember / us-gaap_RegulatoryAgencyAxis = dlhc_DepartmentofLaborMember
Reduction of accrued payroll related to retroactive wage and benefit payments | 8,700,000 us-gaap_LossContingencyAccrualCarryingValuePeriodIncreaseDecrease / us-gaap_LossContingenciesByNatureOfContingencyAxis = us-gaap_UnfavorableRegulatoryActionMember / us-gaap_RegulatoryAgencyAxis = dlhc_DepartmentofLaborMember |  |  |  |  |
Settlement of retroactive payment claim, net | (629,000)us-gaap_LossContingencyLossInPeriod / us-gaap_LossContingenciesByNatureOfContingencyAxis = us-gaap_UnfavorableRegulatoryActionMember / us-gaap_RegulatoryAgencyAxis = dlhc_DepartmentofLaborMember |  |  |  |  |
Department of Labor | Unfavorable Regulatory Action | Unbilled Receivables |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Total accounts receivable | 0 us-gaap_AccountsReceivableGrossCurrent / us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis = us-gaap_UnbilledRevenuesMember / us-gaap_LossContingenciesByNatureOfContingencyAxis = us-gaap_UnfavorableRegulatoryActionMember / us-gaap_RegulatoryAgencyAxis = dlhc_DepartmentofLaborMember |  | 0 us-gaap_AccountsReceivableGrossCurrent / us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis = us-gaap_UnbilledRevenuesMember / us-gaap_LossContingenciesByNatureOfContingencyAxis = us-gaap_UnfavorableRegulatoryActionMember / us-gaap_RegulatoryAgencyAxis = dlhc_DepartmentofLaborMember |  |  | 9,306,000 us-gaap_AccountsReceivableGrossCurrent / us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis = us-gaap_UnbilledRevenuesMember / us-gaap_LossContingenciesByNatureOfContingencyAxis = us-gaap_UnfavorableRegulatoryActionMember / us-gaap_RegulatoryAgencyAxis = dlhc_DepartmentofLaborMember
Accrued Income Receivable | Unbilled Receivables |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Total accounts receivable | $ 536,000 us-gaap_AccountsReceivableGrossCurrent / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = us-gaap_AccruedIncomeReceivableMember / us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis = us-gaap_UnbilledRevenuesMember |  | $ 536,000 us-gaap_AccountsReceivableGrossCurrent / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = us-gaap_AccruedIncomeReceivableMember / us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis = us-gaap_UnbilledRevenuesMember |  |  | $ 497,000 us-gaap_AccountsReceivableGrossCurrent / us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis = us-gaap_AccruedIncomeReceivableMember / us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis = us-gaap_UnbilledRevenuesMember

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