Income Taxes (Narrative) (Details) (USD $)	12 Months Ended
Dec. 31, 2011	Dec. 25, 2010	Dec. 26, 2009
Income Taxes [Abstract]
Net unrecognized tax benefits	$ 5,069,000	$ 6,415,000
Accrued for estimated interest and penalties	2,214,000	2,797,000
Income taxes paid	$ 59,442,000	$ 51,542,000	$ 32,913,000

The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income.

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This element represents the total of accruals as of the date of the statement of financial position for interest recognized for an underpayment of income taxes computed by applying the applicable statutory rate of interest to the difference between a tax position recognized for financial reporting purposes and the amount previously taken or expected to be taken in a tax return of the entity and the amount of statutory penalties for a tax position claimed or expected to be claimed by the entity, in its tax return, that does not meet the minimum statutory threshold to avoid payment of penalties.

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