Income Taxes (Schedule of Components of Deferred Income Tax Assets) (Details) - USD ($) $ in Thousands	Sep. 30, 2016	Sep. 30, 2015
Income Tax Disclosure [Abstract]
Gross assets, current	$ 4,384	$ 3,910
Gross liabilities, current	(378)
Net current deferred income tax asset	4,006	3,910
Gross assets, noncurrent	16,170	5,005
Gross liabilities, noncurrent	(16,308)	(2,717)
Net noncurrent deferred income tax asset (liability)	(138)	2,288
Net deferred income tax asset	$ 3,868	$ 6,198