Income Taxes (Schedule of Components of Deferred Income Tax Assets And Liabilities) (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Sep. 30, 2014
Income Tax Disclosure [Abstract]
Gross assets, current	$ 3,910	$ 5,297
Net current deferred income tax asset	3,910	5,297
Gross assets, noncurrent	5,005	11,532
Gross liabilities, noncurrent	(2,717)	(110)
Net noncurrent deferred income tax asset	2,288	11,422
Net deferred income tax asset	$ 6,198	$ 16,719