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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
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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

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