Income Taxes (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Income Tax Contingency [Line Items]
Retroactive tax benefit	$ 800	$ 600
Income tax benefit	$ (1,047)	$ (991)
Effective tax rate	70.00%	81.00%
R&D Tax Credit
Income Tax Contingency [Line Items]
Tax credit carryforward description	On December 18, 2015, the “Protecting Americans from Tax Hikes Act of 2015” was enacted which retroactively reinstated and made permanent the Research and Development Tax Credit (R&D Tax Credit).