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Derivative Financial Instruments (Narrative) (Details) - Diesel Fuel Swap [Member] $ in Millions	9 Months Ended
	Oct. 03, 2015 USD ($) counterparty
Derivatives, Fair Value [Line Items]
Number of counterparties	2
Master netting agreement, number of counterparties	2
Expected hedging percentage of diesel fuel requirements for next twelve months	50.00%
Deferred net losses, net of tax expected to be reclassified to current earnings over the next twelve months | $	$ 0.6

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- Definition

Derivative, Master Netting Agreement, Number of Counterparties

+ References

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- Definition

Derivative, Number of Counterparties

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- Definition

Expected Hedging Percentage Of Diesel Fuel Requirements For Next Twelve Months.

+ References

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

The estimated net amount of unrealized gains or losses on price risk cash flow hedges as of the balance sheet date expected to be reclassified to earnings within the next twelve months.

+ References

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



-Publisher FASB



-Name Accounting Standards Codification



-Topic 815



-SubTopic 30



-Section 50



-Paragraph 1



-Subparagraph (c)



-URI http://asc.fasb.org/extlink&oid=35736893&loc=d3e80748-113994

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