Concentration of Risk (Tables) - Customer Concentration Risk [Member]

9 Months Ended

Oct. 25, 2015

Sales Revenue, Goods, Net [Member]

Concentration Risk [Line Items]

Schedule Of Significant Customers Accounting For At Least 10% Of Net Sales or Receivables

The following significant customer accounted for at least 10% of net sales in one or more of the periods indicated:

	Three Months Ended				Nine Months Ended
(percentage of net sales)	October 25, 2015		October 26, 2014		October 25, 2015		October 26, 2014
Samsung Electronics (and affiliates)	7	%	10	%	7	%	11	%

Accounts Receivable [Member]

Concentration Risk [Line Items]

Schedule Of Significant Customers Accounting For At Least 10% Of Net Sales or Receivables

The following table shows the customer that has an outstanding receivable balance that represents at least 10% of total net receivables as of one or more of the dates indicated:

	Balance as of
(percentage of net accounts receivable)	October 25, 2015		January 25, 2015
Samsung Electronics (and affiliates)	5	%	12	%