DETAILS OF CERTAIN FINANCIAL STATEMENT COMPONENTS Schedule of Property, Plant and Equipment (Details) (USD $)	12 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2010
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 93,863,000	$ 103,300,000
Less: Accumulated depreciation	(90,031,000)	(97,366,000)
Property, plant and equipment, net	3,832,000	5,934,000
Depreciation expense	2,600,000	3,300,000	2,700,000
Machinery and Equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	80,805,000	89,547,000
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	801,000	810,000
Computer equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	9,025,000	9,397,000
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	3,166,000	3,257,000
Construction in progress
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 66,000	$ 289,000