Employee Benefit Plans (Amounts Recgonized in Accumulated Other Comprehensive Income, Not Yet Recognized as a Component of Net Periodic Benefit Cost) (Details) (USD $)	12 Months Ended
Dec. 26, 2012	Dec. 28, 2011
Pension Plan [Member]
Defined Benefit Plan, Amounts Reocgnized in Accumulated Other Comprehensive Income, Not Yet Reocgnized as Net Periodic Benefit Cost [Abstract]
Unamortized actuarial losses, net	$ (27,798,000)	$ (27,596,000)
Accumulated other comprehensive income to be recognized in 2013	1,700,000
Other Defined Benefit Plans [Member]
Defined Benefit Plan, Amounts Reocgnized in Accumulated Other Comprehensive Income, Not Yet Reocgnized as Net Periodic Benefit Cost [Abstract]
Unamortized actuarial losses, net	(1,007,000)	(832,000)
Maximum [Member] \| Other Defined Benefit Plans [Member]
Defined Benefit Plan, Amounts Reocgnized in Accumulated Other Comprehensive Income, Not Yet Reocgnized as Net Periodic Benefit Cost [Abstract]
Accumulated other comprehensive income to be recognized in 2013	$ 100,000

The pretax net amount of gains and losses that are not yet recognized as a component of net periodic benefit cost, and that are recognized as increases or decreases in other comprehensive income as they arise. Gains and losses are due to 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 aggregate amount in accumulated other comprehensive income expected to be recognized as a component of net periodic benefit cost over the fiscal year that follows the most recent annual statement of financial position presented, including the net gain (loss), net prior service cost or credit, and net transition asset or obligation.

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