Property, Plant, and Equipment, net (Details) (USD $)	12 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2012
Property, Plant and Equipment [Line Items]
Property, plant, and equipment, net	$ 44,987,000	$ 49,744,000
Accumulated depreciation	87,000,000	79,900,000
Depreciation	7,300,000	7,200,000	7,500,000
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	17,846,000	18,423,000
Equipment
Property, Plant and Equipment [Line Items]
Property, plant, and equipment, net	21,022,000	23,134,000
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Property, plant, and equipment, net	67,000	95,000
Computer hardware and software
Property, Plant and Equipment [Line Items]
Property, plant, and equipment, net	756,000	933,000
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property, plant, and equipment, net	2,278,000	3,029,000
Construction in progress
Property, Plant and Equipment [Line Items]
Property, plant, and equipment, net	$ 1,516,000	$ 2,628,000