Subsequent Event (Details) - USD ($) $ in Millions	Jan. 03, 2016	Dec. 28, 2014
Loss Contingencies [Line Items]
Accrual for litigation costs	$ 9.9	$ 5.7
Hillson et. al. Case
Loss Contingencies [Line Items]
Accrual for litigation costs	$ 4.1

Amount of loss contingency liability.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14326-108349

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