Executive Officers' Separation and Hiring Costs - (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
Jan. 03, 2015	Dec. 28, 2013	Dec. 29, 2012
Seperation and Hiring Costs [Line Items]
Supplemental Unemployment Benefits, Severance Benefits	$ 1.1
Employee Speration and Hiring, Payment Completion	2016
General and administrative expense
Seperation and Hiring Costs [Line Items]
Separation and hiring costs recorded	$ 3.8	$ 1.4	$ 3.4

Liability for amount due employees, in addition to wages and any other money that employers owe employees, when their employment ends through a layoff or other termination. For example, a company may provide involuntarily terminated employees with a lump sum payment equal to one week's salary for every year of employment.

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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Other Postemployment Benefits

-URI http://asc.fasb.org/extlink&oid=6519534

Name:	us-gaap_SupplementalUnemploymentBenefitsSeveranceBenefits
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant