Summary Of Significant Accounting Policies (Details)	3 Months Ended		12 Months Ended
	Jan. 28, 2012	Jan. 29, 2011	Oct. 29, 2011
Concentration Risk [Line Items]
Number of customers accounted in accounts receivable	2		2
Concentration of accounts receivable from major customer	26.00%		30.00%
Number of customers accounted in net revenues	3	3
Percentage of total net revenues represented by major customers	48.00%	47.00%
Major Customer One [Member]
Concentration Risk [Line Items]
Concentration of accounts receivable from major customer	15.00%		16.00%
Percentage of total net revenues represented by major customers	13.00%	12.00%
Major Customer Two [Member]
Concentration Risk [Line Items]
Concentration of accounts receivable from major customer	11.00%		14.00%
Percentage of total net revenues represented by major customers	20.00%	17.00%
Major Customer Three [Member]
Concentration Risk [Line Items]
Percentage of total net revenues represented by major customers	15.00%	18.00%