Property, Plant, and Equipment, net (Property, Plant, and Equipment, Net) (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Sep. 30, 2014
Property, Plant and Equipment [Line Items]
Property, plant, and equipment, net	$ 8,580	$ 10,446
Equipment
Property, Plant and Equipment [Line Items]
Property, plant, and equipment, net	6,602	7,328
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Property, plant, and equipment, net	30	42
Computer hardware and software
Property, Plant and Equipment [Line Items]
Property, plant, and equipment, net	708	749
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property, plant, and equipment, net	330	2,278
Construction in progress
Property, Plant and Equipment [Line Items]
Property, plant, and equipment, net	$ 910	$ 49