PROPERTY AND EQUIPMENT (Detail) (USD $)	12 Months Ended
	Sep. 30, 2012	Oct. 02, 2011	Oct. 03, 2010
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 364,659,000	$ 229,260,000
Accumulated depreciation	(257,563,000)	(148,090,000)
Land	1,725,000	1,725,000
Construction in progress	7,325,000	7,027,000
Property and equipment, net	116,146,000	89,922,000	75,913,000
Property plant and equipment useful life	Shorter of asset life or life of lease
Depreciation expense	31,300,000	29,100,000	19,300,000
Buildings
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	39,310,000	38,571,000
Machinery and equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	284,925,000	163,566,000
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	9,908,000	5,902,000
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 30,516,000	$ 21,221,000
Property plant and equipment useful life	Shorter of asset life or life of lease
Minimum | Buildings
Property, Plant and Equipment [Line Items]
Property plant and equipment useful life	20 years
Minimum | Machinery and equipment
Property, Plant and Equipment [Line Items]
Property plant and equipment useful life	3 years
Minimum | Furniture and fixtures
Property, Plant and Equipment [Line Items]
Property plant and equipment useful life	5 years
Maximum | Buildings
Property, Plant and Equipment [Line Items]
Property plant and equipment useful life	40 years
Maximum | Machinery and equipment
Property, Plant and Equipment [Line Items]
Property plant and equipment useful life	10 years
Maximum | Furniture and fixtures
Property, Plant and Equipment [Line Items]
Property plant and equipment useful life	10 years