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Note 3 (Detail) (USD $)	3 Months Ended		6 Months Ended
Note 3 (Detail) (USD $)	Mar. 30, 2013	Mar. 24, 2012	Mar. 30, 2013	Mar. 24, 2012
Depreciation	$ 7,074,000	$ 6,355,000	$ 13,864,000	$ 12,712,000
Minimum [Member]
Finite-Lived Intangible Asset, Useful Life			3 years
Maximum [Member]
Finite-Lived Intangible Asset, Useful Life			20 years

The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation.

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