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Basis of Presentation
12 Months Ended
Sep. 30, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
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. The accompanying financial statements have been prepared in accordance with U.S. generally accepted accounting principles and with the instructions to Form 10-K, Regulation S-X, and Regulation S-K. Certain reclassifications have been made to the prior year’s consolidated financial statements to conform to the current year presentation.