Concentration of Risk (Tables)

12 Months Ended

Jan. 25, 2015

Risks and Uncertainties [Abstract]

Schedule of significant customers accounting for at least 10% of net sales during period

Each of the following significant customers accounted for at least 10% of net sales for at least one of the periods indicated:

	Fiscal Year Ended
(percentage of net sales)	January 25, 2015		January 26, 2014		January 27, 2013
Samsung Electronics Co., Ltd.(and affiliates)	11	%	12	%	12	%
Huawei Technologies Co., Ltd (and affiliates)	5	%	9	%	10	%

Schedule of significant customers having an outstanding receivable balance that represents at least 10% of total net receivables during period

The following table shows the list of customers that have an outstanding receivable balance that represents at least 10% of total net receivables for at least one of the periods indicated:

	Balance as of
(percentage of net accounts receivable)	January 25, 2015		January 26, 2014
Samsung Electronics Co., Ltd.(and affiliates)	12	%	13	%