| **Subsequent Events**            | 12 Months Ended                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |
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| **Subsequent Events [Abstract]** |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |
| Subsequent Events                | Subsequent EventsOn November 10, 2016, an aggregate of 93,750 shares of Common Stock of the Company were issued to the non-employee members of the Company's Board of Directors, in accordance with DLH's compensation policy for non-employee directors. The shares vested immediately, and stock expense of  approximately $456 thousand was recognized accordingly. This transaction will be reflected in DLH first quarter results for fiscal year 2017.  Management has evaluated subsequent events through the date that the Company's financial statements were issued. Based on this evaluation, the Company has determined that no further subsequent events have occurred which require disclosure through the date that these financial statements were issued. |

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| - Definition
The entire disclosure for significant events or transactions that occurred after the balance sheet date through the date the financial statements were issued or the date the financial statements were available to be issued. Examples include: the sale of a capital stock issue, purchase of a business, settlement of litigation, catastrophic loss, significant foreign exchange rate changes, loans to insiders or affiliates, and transactions not in the ordinary course of business.
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