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Net Classification of Deferred Income Tax Assets and Liabilities in Balance Sheet (Details) - USD ($) $ in Thousands | Sep. 30, 2018 | Sep. 30, 2017
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Income Tax Disclosure [Abstract] |  |
Deferred income tax assets, net | $ 246 | $ 259
Deferred income tax liabilities, net | (45) | (37)
Net deferred income tax assets | $ 201 | $ 222

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