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Employee Benefit Plans (Pension Plans With Accumulated Benefit Obligations In Excess Of Fair Value Of Plan Assets) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 30, 2012	Dec. 25, 2011
Defined Benefit Pension Plans and Defined Benefit Postretirement Plans Disclosure [Abstract]
Projected benefit obligation	$ 102,014	$ 84,674
Accumulated benefit obligation	96,774	80,744
Fair value of plan assets	$ 1,488	$ 1,406

If aggregate disclosures are presented, the aggregate pension accumulated benefit obligation for pension plans with accumulated benefit obligations in excess of plan assets as of the measurement date of each statement of financial position presented.

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