Income Taxes (Deferred Tax Valuation Allowance) (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2013
Deferred Tax Valuation Allowance [Roll Forward]
Balance at the beginning of the year	$ 12,350	$ 8,450	$ 2,600
Additions to valuation allowance	11,460	3,900	5,850
Balance at the end of the year	$ 23,810	$ 12,350	$ 8,450