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Basis of Presentation (Details)
6 Months Ended 12 Months Ended
Mar. 24, 2012
Sep. 24, 2011
Basis of Presentation [Abstract]    
Limited partner interest in the Operating Partnership 100.00% 100.00%
Minimum number of weeks in the fiscal year reporting calendar 52 52
Maximum number of weeks in the fiscal year reporting calendar 53 53
Minimum number of weeks in a fiscal quarter 13 13
Maximum number of weeks in a fiscal quarter 14 14