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Summary of Significant Accounting Policies Facility Closing Costs (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Jan. 03, 2015	Dec. 29, 2012	Dec. 28, 2013
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve	$ 0.6us-gaap_RestructuringReserve		$ 0.7us-gaap_RestructuringReserve
Restructuring Charges	0.1us-gaap_RestructuringCharges	0.1us-gaap_RestructuringCharges
Severance Costs	0.1us-gaap_SeveranceCosts1
Maximum [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges			0.1
Employee Severance [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	0.1
Employee Severance [Member] \| Maximum [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	$ 0.1

Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

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- Definition

Amount of expenses for special or contractual termination benefits provided to current employees involuntarily terminated under a benefit arrangement associated exit or disposal activities pursuant to an authorized plan. Excludes expenses related to one-time termination benefits, a discontinued operation or an asset retirement obligation.

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