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Supporting Financial Information - Accounts Payable, Accrued Expense and Other Current Liabilities (Details) - USD ($)
$ in Thousands
Mar. 31, 2018
Sep. 30, 2017
Organization, Consolidation and Presentation of Financial Statements [Abstract]    
Accounts payable $ 4,914 $ 5,205
Accrued benefits 1,857 1,831
Accrued bonus and incentive compensation 1,029 1,544
Accrued workers compensation insurance 1,626 1,598
Other accrued expenses 510 717
Total accrued expenses and other current liabilities $ 9,936 $ 10,895