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Derivative Instruments and Hedging Activities (Details) (Other Current Assets [Member], Commodity contracts [Member], Designated as Hedging Instrument [Member], USD $) In Thousands	Jul. 02, 2011	Dec. 25, 2010
Other Current Assets [Member] \| Commodity contracts [Member] \| Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Other current assets: gain positions	$ 644	$ 891
Other current assets: loss positions	$ (106)

Fair value of liability associated with derivative asset, presented on a gross basis even when the derivative instrument is subject to master netting arrangements and qualifies for net presentation in the statement of financial position.

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- Definition

Fair value of derivative asset, presented on a gross basis even when the derivative instrument is subject to master netting arrangements and qualifies for net presentation in the statement of financial position.

+ References+ Details