Geographic Information and Concentration of Risk (Schedule Of Significant Customers Accounting For At Least 10% Of Net Sales During Period) (Details) (Sales Revenue, Goods, Net [Member])	3 Months Ended		9 Months Ended
	Oct. 28, 2012	Oct. 30, 2011	Oct. 28, 2012	Oct. 30, 2011
Geographic Information And Concentration Of Risk [Line Items]
Concentration risk, percentage	100.00%	100.00%	100.00%	100.00%
Minimum concentration risk threshold	10.00%
Samsung Electronics (And Affiliates) [Member]
Geographic Information And Concentration Of Risk [Line Items]
Concentration risk, percentage	13.00%	14.00%	12.00%	13.00%
Huawei Technologies Co. (And Affiliates) [Member]
Geographic Information And Concentration Of Risk [Line Items]
Concentration risk, percentage	9.00%		10.00%
Frontek Technology Corp [Member]
Geographic Information And Concentration Of Risk [Line Items]
Concentration risk, percentage		10.00%		11.00%