Intangible Assets (Summary of Intangible Assets) (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Sep. 30, 2014
Finite-Lived Intangible Assets [Line Items]
Gross Assets	$ 3,274	$ 4,697
Accumulated Amortization	(3,274)	(4,615)
Net Assets	0	82
Patents [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Assets	3,274	4,697
Accumulated Amortization	(3,274)	(4,615)
Net Assets	$ 0	$ 82