Income Taxes (Schedule of Valuation Allowance) (Details) - Valuation Allowance of Deferred Tax Assets - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2013
Valuation Allowance [Line Items]
Beginning balance	$ 903	$ 135	$ 7,498
Charged to cost and expenses	10,048	80	(6,318)
Charged to other accounts	(895)	688	(1,045)
Ending balance	$ 10,056	$ 903	$ 135