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Property, Plant And Equipment (Narrative) (Details) (USD $)	12 Months Ended
	Sep. 29, 2012	Oct. 01, 2011	Oct. 02, 2010
Property, plant and equipment, net	$ 265,191,000	$ 247,816,000
Amortization of assets held under capital leases	800,000	900,000	1,000,000
Accounts payable related to the purchase of property, plant and equipment	11,500,000	12,300,000	6,300,000
Capital Lease Additions [Member]
Capital lease additions	100,000		900,000
San Diego Facility [Member]
Property, plant and equipment, net	$ 8,400,000

Tangible assets that are held by an entity for use in the production or supply of goods and services, for rental to others, or for administrative purposes and that are expected to provide economic benefit for more than one year; net of accumulated depreciation. Examples include land, buildings, machinery and equipment, and other types of furniture and equipment including, but not limited to, office equipment, furniture and fixtures, and computer equipment and software.

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