Employee Benefit Plans (Components Of The Change In Unamortized Actuarial Losses, Net, Included In Accumulated Other Comprehensive Income) (Details) (USD $)	12 Months Ended
Dec. 31, 2014	Dec. 25, 2013	Dec. 26, 2012
Components of the Change in Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Net gain	$ 1,248,000	$ 876,000	$ 2,610,000
Settlement loss recognized	(50,000)
Minimum pension liability adjustment	6,304,000	(6,309,000)	186,000
Accumulated other comprehensive income (losses) related to minimum pension liability adjustments, net of tax	(25,000,000)	(18,700,000)
Accumulated other comprehensive income (losses) related to minimum pension liability adjustments, tax benefit (expense)	3,700,000	(400,000)
Pension Plan [Member]
Components of the Change in Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance, beginning of year	(17,433,000)	(27,798,000)
Benefit obligation actuarial (loss) gain	(12,313,000)	7,836,000
Net gain	1,248,000	876,000
Amortization of net loss	924,000	1,653,000	1,763,000
Balance, end of year	(27,574,000)	(17,433,000)	(27,798,000)
Other Defined Benefit Plans [Member]
Components of the Change in Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance, beginning of year	(899,000)	(1,007,000)
Benefit obligation actuarial (loss) gain	(298,000)	37,000
Amortization of net loss	66,000	71,000	52,000
Settlement loss recognized	50,000	0	0
Balance, end of year	$ (1,081,000)	$ (899,000)	$ (1,007,000)

Defined Benefit Plan, Accumulated Other Comprehensive Income Minimum Pension Liability, Tax

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The pretax total of net gain (loss), prior service cost (credit), and transition assets (obligations), as well as minimum pension liability if still remaining, included in accumulated other comprehensive income associated with a defined benefit pension or other postretirement plan(s) because they have yet to be recognized as components of net periodic benefit cost.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

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-SubTopic 20

-Section 50

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After tax amount of additional minimum pension liability not yet recognized as a net periodic pension cost.

+ References

No definition available.

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- Definition

Amount of gain (loss) related to change in benefit obligation resulting from changes in actuarial assumptions, for example, but not limited to, interest, mortality, employee turnover, salary, and temporary deviation from the substantive plan.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

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-Glossary Gain or Loss

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The amount of gains or losses recognized in net periodic benefit cost.

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Amount of net gain (loss) recognized in net periodic benefit cost as a result of an irrevocable action that relieves the employer (or the plan) of primary responsibility for a benefit obligation and eliminates significant risks related to the obligation and the assets used to effect the settlement. Examples of transactions that constitute a settlement include, but are not limited to, lump-sum cash payments to plan participants in exchange for their rights to receive specified benefits and purchasing nonparticipating annuity contracts to cover vested benefits.

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Amount after tax and reclassification adjustments, of (increase) decrease in accumulated other comprehensive (income) loss related to pension and other postretirement defined benefit plans.

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Amount before tax of (increase) decrease in the value of the projected benefit obligation related to a change in an actuarial assumption and increase (decrease) in the value of the plan assets resulting from experience different from that assumed, that has not been recognized in net periodic benefit (cost) credit.

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