Income Taxes Tax Year Examination (Details) - U.S. Federal and State Jursidictions [Member]	12 Months Ended
Dec. 29, 2017
Latest Tax Year [Member]
Income Tax Examination [Line Items]
Tax years that remain subject to examination	2010
Earliest Tax Year [Member]
Income Tax Examination [Line Items]
Tax years that remain subject to examination	2009

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.

No definition available.

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Period Type:	duration