Retirement Plans (Summary of Changes in Fair Value of Level 3 Assets) (Details) - USD ($) $ in Thousands	12 Months Ended
Jan. 02, 2016	Dec. 27, 2014
Fair Value of Level 3 Assets [Roll Forward]
Fair value of plan assets at beginning of year	$ 267,635
Fair value of plan assets at end of year	247,519	$ 267,635
Pensions [Member]
Fair Value of Level 3 Assets [Roll Forward]
Fair value of plan assets at beginning of year	267,635	260,917
Fair value of plan assets at end of year	247,519	267,635
Alternative investments [Member] \| Pensions [Member]
Fair Value of Level 3 Assets [Roll Forward]
Fair value of plan assets at beginning of year	58,643
Fair value of plan assets at end of year	50,281	58,643
Level 3 [Member] \| Pensions [Member]
Fair Value of Level 3 Assets [Roll Forward]
Fair value of plan assets at beginning of year	58,643
Fair value of plan assets at end of year	50,281	58,643
Level 3 [Member] \| Alternative investments [Member] \| Pensions [Member]
Fair Value of Level 3 Assets [Roll Forward]
Fair value of plan assets at beginning of year	58,643	53,116
Asset sales	(7,010)	(2,884)
Asset purchases	0	2,884
Unrealized gains (losses)	(1,352)	5,527
Fair value of plan assets at end of year	50,281	58,643
Realized gains (losses) on asset sales	$ 2,500	$ (100)

Defined Benefit Plan, Fair Value of Plan Assets, Asset Purchases

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- Definition

Defined Benefit Plan, Fair Value of Plan Assets, Asset Sales

+ References

No definition available.

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- Definition

Defined Benefit Plan, Fair Value of Plan Assets, Realized Gains (Losses)

+ References

No definition available.

+ Details

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- Definition

Defined Benefit Plan, Fair Value of Plan Assets, Unrealized Gains (losses)

+ References

No definition available.

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- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 30
-Section 35
-Paragraph 50
-URI http://asc.fasb.org/extlink&oid=29635418&loc=d3e12355-114930

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=35743120&loc=d3e1928-114920

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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

No definition available.

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