| **Significant Accounting Policies** | 12 Months Ended                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  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| **Accounting Policies [Abstract]**  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  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| Significant Accounting Policies     | Significant Accounting PoliciesUse of Estimates The preparation of financial statements in conformity with accounting principles generally accepted in the United States requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Significant estimates include valuation of goodwill, valuation allowances established against accounts receivable and deferred tax assets, and measurement of loss development on workers’ compensation claims. We evaluate these estimates and judgments on an ongoing basis and base our estimates on historical experience, current and expected future outcomes, third-party evaluations and various other assumptions that we believe are reasonable under the circumstances. The results of these estimates form the basis for making judgments about the carrying values of assets and liabilities as well as identifying and assessing the accounting treatment with respect to commitments and contingencies. We revise material accounting estimates if changes occur, such as more experience is acquired, additional information is obtained, or there is new information on which an estimate was or can be based. Actual results could differ from those estimates. In particular, a material reduction in the fair value of goodwill could have a material adverse effect on the Company’s financial position and results of operations. We account for the effect of a change in accounting estimate during the period in which the change occurs. Revenue Recognition DLH’s revenue is derived from professional and other specialized service offerings to US Government agencies through a variety of contracts, some of which are fixed-price in nature and/or sourced through Federal Supply Schedules administered by the General Services Administration (“GSA”) at fixed unit rates or hourly arrangements. We generally operate as a prime contractor, but have also entered into contracts as a subcontractor. The recognition of revenue from fixed rates is based upon objective criteria that generally do not require significant estimates. DLH recognizes and records revenue on government contracts when it is realized, or realizable, and earned. DLH considers these requirements met when: (a) persuasive evidence of an arrangement exists; (b) the services have been delivered to the customer; (c) the sales price is fixed or determinable and free of contingencies or significant uncertainties; and (d) collectibility is reasonably assured. Goodwill and other intangible assets We have used the acquisition method of accounting for the Danya transaction, whereby the assets acquired and liabilities assumed are recognized based upon their estimated fair values at the acquisition date. The estimated fair values of assets acquired and liabilities assumed are provisional and are based on the information that was available as of the acquisition date. The Company believes that information provides a reasonable basis for estimating the fair values of assets acquired and liabilities assumed, but the Company is waiting for additional information necessary to finalize those fair values. Therefore, the provisional measurements of fair value reflected are subject to change and such changes could be significant. The Company expects to finalize the valuation and complete the purchase price allocation as soon as practicable but no later than one year from the acquisition date. Initial estimates of this allocation are shown under Note 11 Business Combinations.  On the basis of the estimated assets acquired, the Company amortized $1.1 million for the five months since the acquisition and for the period ended September 30, 2016.DLH continues to review its goodwill and other intangible assets for possible impairment or loss of value at least annually or more frequently upon the occurrence of an event or when circumstances indicate that a reporting unit’s carrying amount is greater than its fair value.  At September 30, 2016 we performed a goodwill impairment evaluation on the year-end carrying value of approximately million $35 million. We performed both a qualitative and quantitative assessment of factors to determine whether it was necessary to perform the goodwill impairment test. Based on the results of the work performed, the Company has concluded that no impairment loss was warranted at September 30, 2016. For the twelve months ended September 30, 2016, the Company determined that no change in business conditions occurred which would have a material adverse effect on the valuation of goodwill. Notwithstanding, factors including non-renewal of a major contract or other substantial changes in business conditions could have a material adverse effect on the valuation of goodwill in future periods and the resulting charge could be material to future periods’ results of operations. Business CombinationsIn accordance with Accounting Standards Codification 805, "Business Combinations" ("ASC 805") the Company records acquisitions under the purchase method of accounting, under which the acquisition purchase price is allocated to the assets acquired and liabilities assumed based upon the respective fair values.  The company utilizes estimates and in some instances, may retain the services of an independent third-party valuation firm to assist in determining the fair values of assets acquired, liabilities assumed, and contingent consideration granted.  Such estimates and valuations require the Company to make significant assumptions.  These assumption may include projections of future events and operating performance.Long Lived AssetsThe Company acquired certain long lived intangible assets as part of the acquisition of Danya.  These assets are estimated at a fair value and amortized on a straight-line basis over their assessed useful lives.  The assessed useful lives of the assets are between 4 - 9 years.Income TaxesDLH accounts for income taxes in accordance with the liability method, whereby deferred tax assets and liabilities are determined based on the difference between the financial statement and tax bases of assets and liabilities, using enacted tax rates in effect for the year in which the differences are expected to reverse.  Deferred tax assets are reflected on the consolidated balance sheet when it is determined that it is more likely than not that the asset will be realized. This guidance also requires that deferred tax assets be reduced by a valuation allowance if it is more likely than not that some or all of the deferred tax asset will not be realized.  We account for uncertain tax positions by recognizing the financial statement effects of a tax position only when, based upon the technical merits, it is "more-likely-than-not" that the position will be sustained upon examination. We had no uncertain tax positions at either September 30, 2016 and 2015.  We report interest and penalties as a component of income tax expense. In the fiscal quarters ended September 30, 2016 and 2015, we recognized no interest and no penalties related to income taxes.Stock-based Equity CompensationThe Company uses the fair value-based method for stock-based equity compensation. Options issued are designated as either an incentive stock or a non-statutory stock option. No option may be granted with a term of more than 10 years from the date of grant.  Option awards may depend on achievement of certain performance measures determined by the Compensation Committee of our Board. Shares issued upon option exercise are newly issued common shares. All awards to employees and non-employees are recorded at fair value on the date of the grant and expensed over the period of vesting. The Company uses a binomial option pricing model to estimate the fair value of each stock option at the date of grant. Any consideration paid by the option holders to purchase shares is credited to capital stock. Cash and Cash EquivalentsWe consider all highly liquid investments with an original maturity of three months or less when purchased to be cash equivalents.  We maintain cash balances at financial institutions that are insured by the Federal Deposit Insurance Corporation (“FDIC”) up to $250,000.  Deposits held with financial institutions may exceed the $250,000 limit.Earnings per ShareBasic earnings per share is calculated by dividing income available to common shareholders by the weighted average number of common stock outstanding and restricted stock grants that vested or are likely to vest during the period.  Diluted earnings per share is calculated by dividing income (loss) available to common shareholders by the weighted average number of basic common shares outstanding, adjusted to reflect potentially dilutive securities.  Diluted earnings per is calculated using the treasury stock method.ReclassificationsCertain reclassifications have been made to the prior period financial statements to conform to the current period presentation.  These reclassifications had no effect on previously reported results of operations or accumulated deficit. |

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No definition available.
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| - Definition
The entire disclosure for all significant accounting policies of the reporting entity.
+ References
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