| **PREPAID WORKERS' COMPENSATION:**        | 3 Months Ended                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |
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| **Compensation Related Costs [Abstract]** |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |
| PREPAID WORKERS' COMPENSATION:            | PREPAID WORKERS’ COMPENSATION: As part of the Company’s discontinued PEO operations, DLH had a workers’ compensation program with Zurich American Insurance Company (“Zurich”) which covered the period from March 22, 2002 through November 16, 2003, inclusive. Payments for the policy were made to a trust monthly based on projected claims for the policy period. Interest on all assets held in the trust is credited to DLH. Payments for claims and claims expenses are made from the trust. From time-to-time, trust assets have been refunded to the Company based on Zurich’s overall assessment of claims experience and historical and projected settlements. The final amount of trust funds that could be refunded to the Company is subject to a number of uncertainties (e.g. claim settlements and experience, review by the insurer, health care costs, the extended statutory filing periods for such claims); however, based on a third party’s study of claims experience and after giving effect to agreed-upon adjustments, DLH estimates that at December 31, 2013, the remaining prepaid asset of approximately $0.2 million will be received within the next twelve months. |

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| - Definition
The entire disclosure for prepaid workers' compensation.
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No definition available.
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