| **ORGANIZATION AND BUSINESS:**                                                      | 3 Months Ended                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |
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| **Organization, Consolidation and Presentation of Financial Statements [Abstract]** |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    |
| ORGANIZATION AND BUSINESS                                                           | ORGANIZATION AND BUSINESS: For more than 25 years, DLH Holdings Corp. ("DLH"), has provided professional services to the U.S. Government. Headquartered in Atlanta, Georgia, DLH employs over 1,200 skilled technicians, logisticians, engineers, healthcare and support personnel at more than 25 locations around the United States. DLH’s operating subsidiary, DLH Solutions, Inc., is organized into three broad integrated business areas: Healthcare Delivery Solutions, Logistics & Technical Services, and Contingency / Staff Augmentation Services. Our customers, a majority of whom are within the Departments of Defense ("DoD") and Veterans Affairs ("DVA"), benefit from proven leadership processes, technical excellence and differentiation, and cost management. The remaining portion of DLH's business is comprised of customers within the Center for Disease Control and Prevention, Departments of Justice, Agriculture, Interior and Federal Emergency Management Agency, at locations throughout the United States.DLH Holdings Corp. (together with its subsidiaries, "DLH" or the "Company" and also referred to as "we," "us" and "our") manages its operations from Loganville, Georgia and its principal executive offices are located at 1776 Peachtree Street, Atlanta, Georgia 30309. Corporate History DLH Holdings Corp. was originally incorporated in New Jersey in 1969 as a payroll staffing company. Through several strategic transactions over recent decades, the Company has evolved considerably and in early 2010, made the strategic decision to build the Company around its government services entity, DLH Solutions, Inc.  The Company is now completely focused on government services both as a prime contractor as well as a partner with other government contractors. The Company's other wholly-owned subsidiaries are not actively operating. |

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| - Definition
The entire disclosure for the general note to the financial statements for the reporting entity which may include, descriptions of the basis of presentation, business description, significant accounting policies, consolidations, reclassifications, new pronouncements not yet adopted and changes in accounting principles.
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No definition available.
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