Concentration of Risk (Tables)

12 Months Ended

Jan. 31, 2016

Risks and Uncertainties [Abstract]

Schedule of significant customers

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

	Fiscal Year Ended
(percentage of net sales)	January 31, 2016		January 25, 2015		January 26, 2014
Samsung Electronics (and affiliates)	7	%	11	%	12	%

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)	January 31, 2016		January 25, 2015
Samsung Electronics (and affiliates)	5	%	12	%