Geographic Information and Concentration of Risk - Summary Of Sales Activity To Countries That Represented Greater Than 10% Of Total Net Sales (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%
United States [Member]
Geographic Information And Concentration Of Risk [Line Items]
Concentration risk, percentage	17.00%	20.00%	16.00%	18.00%
China (Including Hong Kong) [Member]
Geographic Information And Concentration Of Risk [Line Items]
Concentration risk, percentage	36.00%	34.00%	34.00%	36.00%
Japan [Member]
Geographic Information And Concentration Of Risk [Line Items]
Concentration risk, percentage	10.00%	9.00%	11.00%	9.00%
South Korea [Member]
Geographic Information And Concentration Of Risk [Line Items]
Concentration risk, percentage	10.00%	8.00%	11.00%	7.00%