Summary Of Significant Accounting Policies (Concentration of Risk Narrative)(Details)	3 Months Ended		9 Months Ended	12 Months Ended
	Jul. 29, 2017 customer	Jul. 30, 2016 customer	Jul. 29, 2017 customer	Oct. 29, 2016 customer
Concentration Risk
Number of Financial Institutions			5
Customer Concentration Risk | Accounts Receivable
Concentration Risk
Concentration Risk, Percentage			33.00%	42.00%
Number Of Customers Included In Concentration Disclosures			2	2
Customer Concentration Risk | Accounts Receivable | Major Customer One
Concentration Risk
Concentration Risk, Percentage			20.00%	29.00%
Customer Concentration Risk | Accounts Receivable | Major Customer Two
Concentration Risk
Concentration Risk, Percentage			13.00%	13.00%
Customer Concentration Risk | Sales Revenue, Segment
Concentration Risk
Concentration Risk, Percentage	37.00%	24.00%
Number Of Customers Included In Concentration Disclosures	3	2
Customer Concentration Risk | Sales Revenue, Segment | Major Customer One
Concentration Risk
Concentration Risk, Percentage	16.00%	12.00%
Customer Concentration Risk | Sales Revenue, Segment | Major Customer Two
Concentration Risk
Concentration Risk, Percentage	11.00%	12.00%
Customer Concentration Risk | Sales Revenue, Segment | Major Customer Three
Concentration Risk
Concentration Risk, Percentage	10.00%