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		6 Months Ended
	Jul. 28, 2013	Jul. 29, 2012	Jul. 28, 2013	Jul. 29, 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	15.00%	17.00%	15.00%	17.00%
China (Including Hong Kong) [Member]
Geographic Information And Concentration Of Risk [Line Items]
Concentration risk, percentage	32.00%	37.00%	33.00%	37.00%
Japan [Member]
Geographic Information And Concentration Of Risk [Line Items]
Concentration risk, percentage	13.00%	10.00%	12.00%	10.00%
South Korea [Member]
Geographic Information And Concentration Of Risk [Line Items]
Concentration risk, percentage	11.00%	6.00%	11.00%	7.00%