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Income Taxes (Income Tax Provision) (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Sep. 30, 2017 | Sep. 30, 2016 | Sep. 30, 2015
Current: |  |  |
Federal | $ 312 | $ (141) | $ 1,452
State | 165 | 139 | 453
Foreign | 1,756 | 2,099 | 2,279
Deferred: |  |  |
U.S. | (1,454) | 1,260 | (297)
Foreign | (654) | (145) | (203)
Income tax provision | $ 125 | $ 3,212 | $ 3,684

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