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. 27, 2013	Oct. 28, 2012	Oct. 27, 2013	Oct. 28, 2012
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	12.00%	13.00%	12.00%	12.00%
Huawei Technologies Co. (And Affiliates) [Member]
Geographic Information And Concentration Of Risk [Line Items]
Concentration risk, percentage	10.00%	9.00%	10.00%	10.00%