Property, Plant, and Equipment, net (Property, Plant, and Equipment, Net) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Sep. 30, 2014
Property, Plant and Equipment [Line Items]
Property, plant, and equipment, net	$ 7,976	$ 10,446
Equipment
Property, Plant and Equipment [Line Items]
Property, plant, and equipment, net	6,776	7,328
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Property, plant, and equipment, net	34	42
Computer hardware and software
Property, Plant and Equipment [Line Items]
Property, plant, and equipment, net	629	749
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property, plant, and equipment, net	347	2,278
Construction in progress
Property, Plant and Equipment [Line Items]
Property, plant, and equipment, net	$ 190	$ 49