Property, Plant, and Equipment, net (Property, Plant, and Equipment, Net) (Details) (USD $)	Jun. 30, 2014	Sep. 30, 2013
Property, Plant and Equipment [Line Items]
Property, plant, and equipment, net	$ 46,048,000	$ 49,744,000
Accumulated depreciation, depletion and amortization	85,300,000	79,900,000
Land
Property, Plant and Equipment [Line Items]
Property, plant, and equipment, net	1,502,000	1,502,000
Building and improvements
Property, Plant and Equipment [Line Items]
Property, plant, and equipment, net	17,939,000	18,423,000
Equipment
Property, Plant and Equipment [Line Items]
Property, plant, and equipment, net	21,844,000	23,134,000
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Property, plant, and equipment, net	74,000	95,000
Computer hardware and software
Property, Plant and Equipment [Line Items]
Property, plant, and equipment, net	818,000	933,000
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property, plant, and equipment, net	2,469,000	3,029,000
Construction in progress
Property, Plant and Equipment [Line Items]
Property, plant, and equipment, net	$ 1,402,000	$ 2,628,000