Retirement Plans (Schedule of Expected Benefit Payments) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 27, 2014
Pensions [Member]
Expected Future Benefit Payments [Abstract]
2015	$ 17,471
2016	17,719
2017	18,045
2018	18,537
2019	18,973
2020 through 2024	100,501
Supplemental Employee Retirement Plans [Member]
Expected Future Benefit Payments [Abstract]
2015	2,027
2016	2,002
2017	1,857
2018	1,688
2019	1,620
2020 through 2024	6,980
Other Postretirement Benefit Plans [Member]
Expected Future Benefit Payments [Abstract]
2015	167
2016	162
2017	156
2018	150
2019	143
2020 through 2024	$ 609

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Amount of benefits expected to be paid in the five fiscal years after the fifth fiscal year following the latest fiscal year from a defined benefit plan.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (f)

-URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920

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- Definition

Amount of benefits expected to be paid in the next fiscal year following the latest fiscal year from a defined benefit plan.

+ References

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Amount of benefits expected to be paid in the fifth fiscal year following the latest fiscal year from a defined benefit plan.

+ References

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Amount of benefits expected to be paid in the fourth fiscal year following the latest fiscal year from a defined benefit plan.

+ References

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Amount of benefits expected to be paid in the third fiscal year following the latest fiscal year from a defined benefit plan.

+ References

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Amount of benefits expected to be paid in the second fiscal year following the latest fiscal year from a defined benefit plan.

+ References

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