| **LIQUIDITY AND SIGNIFICANT ACCOUNTING POLICIES: (Policies)** | 3 Months Ended                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    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| **LIQUIDITY AND SIGNIFICANT ACCOUNTING POLICIES:**            |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            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| Liquidity                                                     | Liquidity In recent years, the Company has financed operations and capital expenditures through the sale of equity securities, convertible notes and more recently, through the proceeds from a rights offering. The Company's immediate sources of liquidity include cash and cash equivalents, accounts receivable, unbilled receivables and access to its asset-based credit facility with Presidential Financial Corporation. The Company's operating liabilities are largely predictable and consist of vendor and payroll related obligations. The Company's operations require substantial working capital to fund the future growth of its business model with expanded business development efforts, and planned capital expenditures to support a larger customer base. At December 31, 2013, the Company had a net working capital deficit of approximately $0.3 million and an accumulated deficit of approximately $67.5 million. For the three months ended December 31, 2013, the Company realized operating income of approximately $66 thousand and net income of approximately $133 thousand. As described further in Note 5, the Company has a credit facility with Presidential Financial Corporation which provides a maximum amount of $6,000,000 and includes a maximum amount available under the unbilled facility of $1,000,000. However, as described in greater detail in Note 5 below, the Company’s ability to borrow against the increased available credit is subject to the satisfaction of a number of conditions.  Presently, the maximum availability under this loan facility is $3,000,000, subject to eligible accounts receivable.  At December 31, 2013, the amount of unused availability was approximately $1.1 million. The amount outstanding on the loan facility as of December 31, 2013 was $0.9 million. Management believes, at present, that: (a) cash and cash equivalents of approximately $2.6 million as of December 31, 2013; b) the amount available under its line of credit (which is limited to the amount of eligible assets); (c) forecasted operating cash flow; (d) certain liabilities not expected to be settled in cash (see Note 3) in fiscal 2014; and (e) effects of cost reduction programs and initiatives should be sufficient to support the Company's operations for twelve months from the date of these financial statements. However, should any of the above- referenced factors not occur substantially as currently expected, there could be a material adverse effect on the Company's ability to access the level of liquidity necessary for it to sustain operations at current levels for the next twelve months. In such an event, management may be forced to make further reductions in spending or seek additional sources of capital to support our operations. If the Company raises additional funds by selling shares of common stock or convertible securities, the ownership of its existing shareholders would be diluted.Presently, the Company derives all of its revenue from agencies of the Federal government. For the fiscal year ended September 30, 2013 and for the three months ended December 31, 2013, the Company derived approximately 96% and  97%, respectively, of its revenue from various contracts awarded by the DVA, the substantial majority of which relate to our provision of healthcare and logistics services to the DVA Consolidated Mail Outpatient Pharmacy (CMOP) program.  As of December 31, 2013, these awards from the DVA have anticipated periods of performance ranging from approximately three to up to five years.  These agreements are subject to the Federal Acquisition Regulations, and there can be no assurance as to the actual amount of services that the Company will ultimately provide to the DVA under these awards.  The Company's results of operations, cash flows and financial condition would be materially adversely affected in the event that we are unable to continue our relationships with the DVA.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      |
| Basis of Presentation                                         | Basis of Presentation The accompanying consolidated financial statements include the accounts of DLH and its subsidiaries, all of which are wholly owned. All significant intercompany balances and transactions have been eliminated in consolidation.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            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| Reclassifications                                             | 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 retained earnings.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 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| Use of Estimates                                              | Use 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, expected settlement amounts of accounts receivable, measurement of prepaid workers’ compensation, valuation allowances established against accounts receivable and deferred tax assets,  measurement of payroll tax contingencies, accounts payable, workers’ compensation claims, and accrued expenses and the valuation of derivative financial instruments associated with debt agreements. In addition, the Company estimates overhead charges and allocates such charges throughout the year.  Actual results could differ from those estimates. In particular, a material reduction in the fair value of goodwill would have a material adverse effect on the Company’s financial position and results of operations.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |
| Revenue Recognition                                           | 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 that may change over time. 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.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    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| Goodwill                                                      | Goodwill In accordance with applicable accounting standards, DLH does not amortize goodwill. DLH continues to review its goodwill 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, 2013, we performed a goodwill impairment evaluation. 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, 2013. 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. For the three months ended December 31, 2013, the Company determined that no change in business conditions occurred which would have a material adverse effect on the valuation of goodwill.  If an impairment write off of all the goodwill became necessary in future periods, a charge of up to $8.6 million would be expensed in the Consolidated Statement of Operations. All remaining goodwill is attributable to the DLH Solutions operating subsidiary.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |
| Income Taxes                                                  | Income Taxes DLH 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. At December 31, 2013 and 2012, the Company recorded a 100% valuation allowance against its net deferred tax assets. The Financial Accounting Standards Board (“FASB”) has issued authoritative guidance that clarifies the accounting for uncertainty in income taxes recognized in an entity’s financial statements and prescribes a recognition threshold of more-likely-than-not to be sustained upon examination. Measurement of the tax uncertainty occurs if the recognition threshold has been met. This interpretation also provides guidance on de-recognition, classification, interest and penalties, accounting in interim periods and disclosures. The Company conducts business solely in the U.S. and, as a result, also files income taxes in various states and other jurisdictions. Given the substantial net operating losses and the related valuation allowance established against such amounts, the Company has concluded that it does not have any uncertain tax positions. There have been no income tax related interest or penalties for the periods presented in these consolidated financial statements. In the normal course of business, the Company and its subsidiaries are subject to examination by Federal and state taxing authorities. The Company’s income tax returns for years subsequent to fiscal 2010 are currently open, by statute, for review by authorities. However, there are no examinations currently in progress and the Company is not aware of any pending audits.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |
| Stock-Based Compensation                                      | Stock-Based Compensation Compensation costs for the portion of equity awards (for which the requisite service has not been rendered) that are outstanding are recognized as the requisite service is rendered. The compensation cost for that portion of awards shall be based on the grant-date fair value of those awards as calculated for recognition purposes under applicable guidance. As of December 31, 2013 and 2012, there was approximately $351 thousand and $208 thousand, respectively, remaining unrecognized compensation expense related to non-vested stock based awards to be recognized in future periods.Certain awards vest upon satisfaction of certain performance criteria.  As permitted, the Company will not recognize expense on the performance based shares until it is probable that these conditions will be achieved.  Such charges could be material in future periods.   Stock Options, Warrants and Restricted Stock For options that vest based on the Company’s common stock achieving certain performance criteria, the Company values these awards with a binomial model that utilizes various probability factors and other criterion in establishing fair value of the grant. The related compensation cost is recognized over the derived service period determined in the valuation. From time to time, the Company grants restricted stock awards to non-employee directors and employees under existing plans. The Company recognizes non-cash compensation expense over the various vesting periods. Stock compensation expense totaled $217 thousand for all awards for the three month period ended December 31, 2013 and totaled $90 thousand for all awards for the three months ended December 31, 2012. On November 8, 2013, the Management Resources and Compensation Committee (the “Committee”) of the Board of Directors approved for the Company’s named executive officers (the “Executive Officers”) equity awards under the Company’s 2006 Long Term Incentive Plan, as amended (the “2006 Plan”) based upon individual and corporate performance during the fiscal year ended September 30, 2013. The stock options (i) have a ten-year term, (ii) have an exercise price equal to the fair market value of the Company’s common stock as determined pursuant to the 2006 Plan, as reported on NASDAQ, on the date of grant ($1.395), and (iii) vest as follows:(a) 50% of the options granted will vest at such time as the Company’s common stock has a closing price of at least $3.00 per share for ten consecutive trading days; and (b) 50% of the options granted will vest on the achievement of certain financial and/or business performance objectives as determined by the Committee for the fiscal year ending September 30, 2014. The options were awarded in the following amounts to the Executive Officers: Mr. Parker was granted 100,000 options and each of Ms. JohnBull, Mr. Armstrong and Mr. Wilson were granted 75,000 options.   Further, the Management Resources and Compensation Committee allocated a pool of options for distribution to non-executive employees of the Company, subject to the same terms and pursuant to the recommendations of the executive management team.  Accordingly, 42,000 additional options were granted to non-executive employees of the Company.As further described in Note 9, 175,000 options were awarded in connection with extensions of the employment agreements of certain members of the executive management team.Warrants are issued from time-to-time to non-employee third parties in order to induce then to enter in certain transactions with the Company. The Company recognizes non-cash expense related to such activity over the estimated period of performance. Effective as of November 25, 2013, the Company granted an aggregate of 80,000 shares of restricted stock to its non-executive directors, consistent with its compensation policy for non-executive directors. These shares were issued pursuant to the exemption from registration provided by Section 4(2) of the Securities Act of 1933, as amended.  The shares vested immediately and stock expense of $108,800 was recognized in the three months ended December 31, 2013.  Additionally, at December 31, 2013, there were 52,500 shares of unvested restricted stock outstanding from prior year grants to non-executive directors.  There is $150,000 of unrecognized expense related to these unvested restricted stock awards.The stock option activity for the three months ended December 31, 2013 is as follows:  Number of Shares Weighted Average Exercise Price Weighted Average Remaining Contractual Term Aggregate Intrinsic ValueOptions outstanding, September 30, 2013 1,612,500 $1.15 7.9 $388,000Granted 605,000 $1.35    Options outstanding, December 31, 2013 2,217,500 $1.21 8.4 $792,000 At December 31, 2013, there were 462,500 options outstanding that were vested and exercisable and an additional 1,755,000 options outstanding that vest to the recipients when the market value of the Company’s stock achieves and maintains defined levels. The aggregate intrinsic value in the table above represents the total pretax intrinsic value (i.e., the difference between the Company’s closing stock price on the last trading day of the period and the exercise price, times the number of shares) that would have been received by the option holders had all option holders exercised their in the money options on those dates. This amount will change based on the fair market value of the Company’s stock. |
| Changes in Shareholders' Equity                               | Changes in Shareholders’ Equity The following are the changes in Shareholders’ Equity for the three months ended December 31, 2013: (Amounts in Thousands)      Additional       Total  Common Stock Paid-In Accumulated Treasury Stock Shareholders’  Shares Amount Capital Deficit Shares Amount EquityBALANCE, September 30, 2013 9,318 $9 $75,400 $(67,601) 2 $(24) $7,784Director restricted stock grants 80   109       109Expense related to employee stock option grants     108       108Exercise of convertible debenture 168   210       210Exercise of warrants 54   113       113Repurchase and cancellation of shares (12)   (14)       (14)Repurchase of shares (5)       5 (7) (7)Net loss       133     133BALANCE, December 31, 2013 9,603 $9 $75,926 $(67,468) 7 $(31) $8,436 On September 18, 2013, we announced that our Board of Directors authorized a stock repurchase program (the Program) under which we could repurchase up to $350,000 of shares of our common stock through open market transactions in compliance with Securities and Exchange Commission Rule 10b-18, privately negotiated transactions, or other means. This repurchase program does not have an expiration date, and we are not obligated to acquire a particular number of shares. Through December 31, 2013, the Company repurchased an aggregate of 17,275 shares of its common stock pursuant to a trading plan entered into by the Company in September 2013 in accordance with Rules 10b5-1 and 10b-18. The average price for all shares repurchased under the program during the quarter ended December 31, 2013 was $1.20 per share. As of December 31, 2013, there is a total of $329,307 remaining for repurchases under the program                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |
| Fair Value of Financial Instruments                           | Fair Value of Financial Instruments The Company has financial instruments, principally accounts receivable, accounts payable, loan payable, notes payable, and accrued expense. Due to the short term nature of these instruments, DLH estimates that the fair value of all financial instruments at December 31, 2013 and September 30, 2013 does not differ materially from the aggregate carrying values of these financial instruments recorded in the accompanying consolidated balance sheets.  In addition, the Company has historically presented certain common stock warrants and embedded conversion features associated with Convertible Debentures and accounts for such derivative financial instruments at fair value.  As further described in Note 6, those convertible debentures matured and the common stock warrants were exercised in the three months ended December 31, 2013.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      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| Earnings (Loss) Per Share                                     | Earnings (Loss) Per Share Basic earnings (loss) per share is calculated by dividing income (loss) available to common shareholders by the weighted average number of common shares outstanding and restricted stock grants that vested or are likely to vest during the period. Diluted earnings (loss) 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. The effects of common stock equivalents of 2,182,804 and 1,686,346 are anti-dilutive for the three months ended December 31, 2013 and 2012, respectively.The following table sets forth the calculation of basic and diluted net income (loss) per share (in thousands, except pershare data):  Three Months Ended  December 31,  2013 2012Numerator:    Net income (loss) $133 $(128)Denominator:    Denominator for basic net income (loss) per share - weighted-average outstanding shares 9,494 9,286Effect of dilutive securities:    Stock options and restricted stock 55 —Denominator for diluted net income (loss) per share - weighted-average outstanding shares 9,549 9,286     Net income (loss) per share - basic $0.01 $(0.01)Net income (loss) per share - diluted $0.01 $(0.01)                                                                                                                                                                                                                                         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Disclosure of accounting policy for determining the fair value of financial instruments.
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Disclosure of accounting policy for goodwill. This accounting policy also may address how an entity assesses and measures impairment of goodwill, how reporting units are determined, how goodwill is allocated to such units, and how the fair values of the reporting units are determined.
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| - Definition
Disclosure of accounting policy for income taxes, which may include its accounting policies for recognizing and measuring deferred tax assets and liabilities and related valuation allowances, recognizing investment tax credits, operating loss carryforwards, tax credit carryforwards, and other carryforwards, methodologies for determining its effective income tax rate and the characterization of interest and penalties in the financial statements.
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| - Definition
Disclosure of accounting policy for reporting when there is a substantial doubt about an entity's ability to continue as a going concern for a reasonable period of time (generally a year from the balance sheet date). Disclose: (a) pertinent conditions and events giving rise to the assessment of substantial doubt about the entity's ability to continue as a going concern for a reasonable period of time, (b) the possible effects of such conditions and events, (c) management's evaluation of the significance of those conditions and events and any mitigating factors, (d) possible discontinuance of operations, (e) management's plans (including relevant prospective financial information), and (f) information about the recoverability or classification of recorded asset amounts or the amounts or classification of liabilities. If management's plans alleviate the substantial doubt about the entity's ability to continue as a going concern, disclosure of the principal conditions and events that initially raised the substantial doubt about the entity's ability to continue as a going concern would be expected to be considered. Disclose whether operations for the current or prior years generated sufficient cash to cover current obligations, whether waivers were obtained from creditors relating to the company's default under the provisions of debt agreements and possible effects of such conditions and events, such as: whether there is a possible need to obtain additional financing (debt or equity) or to liquidate certain holdings to offset future cash flow deficiencies. Disclose appropriate parent company information when parent is dependent upon remittances from subsidiaries to satisfy its obligations.
+ References
No definition available.
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| - Definition
Disclosure of accounting policy for reclassifications that affects the comparability of the financial statements.
+ References
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| - Definition
Disclosure of accounting policy for revenue recognition. If the entity has different policies for different types of revenue transactions, the policy for each material type of transaction is generally disclosed. If a sales transaction has multiple element arrangements (for example, delivery of multiple products, services or the rights to use assets) the disclosure may indicate the accounting policy for each unit of accounting as well as how units of accounting are determined and valued. The disclosure may encompass important judgment as to appropriateness of principles related to recognition of revenue. The disclosure also may indicate the entity's treatment of any unearned or deferred revenue that arises from the transaction.
+ References
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| - Definition
Disclosure of accounting policy for stock option and stock incentive plans. This disclosure may include (1) the types of stock option or incentive plans sponsored by the entity (2) the groups that participate in (or are covered by) each plan (3) significant plan provisions and (4) how stock compensation is measured, and the methodologies and significant assumptions used to determine that measurement.
+ References
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| - Definition
Disclosure of accounting policy for its capital stock transactions, including dividends and accumulated other comprehensive income.
+ References
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| - Definition
Disclosure of accounting policy for the use of estimates in the preparation of financial statements in conformity with generally accepted accounting principles.
+ References
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