Employee Benefit Plans (Funded Status Of Plans And Amount Recognized In Balance Sheet) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 25, 2011	Dec. 26, 2010	Dec. 27, 2009
Employee Benefit Plans [Abstract]
Net benefit obligation at beginning of year	$ 81,226	$ 83,634
Service cost	972	855	1,020
Interest cost	4,418	4,331	4,643
Actuarial loss	4,439	4,344
Gross benefits paid	(4,537)	(4,487)
Plan curtailments	(618)
Plan settlements	(470)
Foreign currency exchange rate changes	(756)	(7,451)
Net benefit obligation at end of year	84,674	81,226	83,634
Fair value of plan assets at beginning of year	1,472	1,400
Actual return on assets	145	(432)
Employer contributions	4,801	5,117
Plan settlements	(470)
Foreign currency exchange rate changes	(5)	(126)
Fair value of plan assets at end of year	1,406	1,472	1,400
Funded status at end of year	$ (83,268)	$ (79,754)

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The difference between fair value of plan assets at the end of the period and the fair value at the beginning of the period, adjusted for contributions and payments of benefits during the period, and after adjusting for taxes and other expenses, as applicable.

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The net increase or decrease of changes in the value of either the benefit obligation or the plan assets resulting from experience different from that assumed or from a change in an actuarial assumption, or the consequence of a decision to temporarily deviate from the substantive plan.

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The amount of decrease that is related to an event that significantly reduces the expected years of future service of present employees or eliminates for a significant number of employees the accrual of defined benefits for some or all of their future services.

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Assets, usually stocks, bonds, and other investments, that have been segregated and restricted (usually in a trust) to provide benefits, at their fair value as of the measurement date. Plan assets include amounts contributed by the employer (and by employees for a contributory plan) and amounts earned from investing the contributions, less benefits paid. If a plan has liabilities other than for benefits, those non-benefit obligations may be considered as reductions of plan assets.

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The amount of increase or decrease in the benefit obligation attributed to foreign currency changes. The effects of foreign currency exchange rate changes that are to be disclosed are those applicable to plans of a foreign operation whose functional currency is not the reporting currency.

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The amount of increase or decrease in plan assets attributed to foreign currency changes. The effects of foreign currency exchange rate changes that are to be disclosed are those applicable to plans of a foreign operation whose functional currency is not the reporting currency.

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