PROPERTY AND EQUIPMENT (Detail) (USD $)	12 Months Ended
	Sep. 28, 2014	Sep. 29, 2013	Sep. 30, 2012
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 436,793,000	$ 416,041,000
Accumulated depreciation	(303,758,000)	(303,529,000)
Land	2,084,000	1,725,000
Construction in progress	13,593,000	10,921,000
Property and equipment, net	148,712,000	125,158,000	116,146,000
Property plant and equipment useful life	Shorter of asset life or life of lease
Depreciation expense	32,900,000	28,800,000	31,300,000
Buildings
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	40,109,000	37,773,000
Machinery and equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	339,800,000	328,652,000
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	9,917,000	10,918,000
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 46,967,000	$ 38,698,000
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