Basis of Presentation and Summary of Significant Accounting Policies Narrative (Details)	3 Months Ended	9 Months Ended
	Sep. 29, 2012 weeks	Sep. 29, 2012 weeks
Minimum [Member]
Number of Weeks in Reporting Period	13
Number of Weeks in Fiscal Year, Range (in weeks)		52
Maximum [Member]
Number of Weeks in Reporting Period		39
Number of Weeks in Fiscal Year, Range (in weeks)		53