Basis of Presentation and Summary of Significant Accounting Policies Narrative (Details)	9 Months Ended
	Sep. 24, 2011 weeks years
Minimum [Member]
Number of Weeks in Reporting Period	13
Number of Weeks in Fiscal Year Low End of Range (in weeks)	52
Maximum [Member]
Number of Weeks in Reporting Period	39
Number of Weeks in Fiscal Year Low End of Range (in weeks)	53