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Income Taxes - Deferred Tax Assets (Details) - USD ($) $ in Thousands | Sep. 30, 2017 | Sep. 30, 2016
--- | --- | ---
Deferred Tax Assets: |  |
Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Allowance for Doubtful Accounts | $ 243 | $ 280
Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Accrued Liabilities | 12,915 | 10,729
Deferred Tax Assets, Operating Loss Carryforwards | 77,497 | 86,280
Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Other | 1,807 | 1,410
Deferred Tax Assets Investments | 82 | 84
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Share-based Compensation Cost | 1,570 | 1,012
Deferred Tax Assets, Capital Loss Carryforwards | 337 | 338
Deferred Tax Assets, Other | 3,195 | 3,185
Deferred Tax Assets, Gross | 97,646 | 103,318
Deferred Tax Assets, Valuation Allowance | 2,366 | 2,224
Deferred Tax Assets, Net | 95,280 | 101,094
Deferred Tax Liabilities: |  |
Deferred Tax Liabilities, Property, Plant and Equipment | 2,019 | 1,517
Deferred Tax Liabilities Goodwill And Intangible Assets | 6,548 | 5,629
Deferred Tax Liabilities, Other | 502 | 399
Deferred Income Tax Liabilities, total | 9,069 | 7,545
Deferred Tax Assets (Liabilities), Net | $ 86,211 | $ 93,549

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