Basis of Presentation (Details 2)	4 Months Ended
	Jan. 19, 2014	Jan. 20, 2013
Percentage sales by geographic area
Percentage of Total Sales	100.00%	100.00%
United States [Member]
Percentage sales by geographic area
Percentage of Total Sales	96.70%	96.60%
Canada and United Kingdom [Member]
Percentage sales by geographic area
Percentage of Total Sales	3.30%	3.40%