Segment Information 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. 26, 2014	Oct. 27, 2013	Oct. 26, 2014	Oct. 27, 2013
Revenues from External Customers and Long-Lived Assets [Line Items]
Minimum concentration risk threshold	10.00%
Concentration risk, percentage	100.00%	100.00%	100.00%	100.00%
China Including Hong Kong [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Concentration risk, percentage	41.00%	36.00%	37.00%	34.00%
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Concentration risk, percentage	10.00%	17.00%	12.00%	16.00%
Japan
Revenues from External Customers and Long-Lived Assets [Line Items]
Concentration risk, percentage	10.00%	10.00%	11.00%	11.00%
South Korea
Revenues from External Customers and Long-Lived Assets [Line Items]
Concentration risk, percentage	9.00%	10.00%	9.00%	11.00%