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Concentration of Risk (Tables)
 12 Months Ended
Jan. 28, 2018
Risks and Uncertainties [Abstract]  
Schedule of significant customers
The following significant customers accounted for at least 10% of net sales in one or more of the periods indicated:
 
Fiscal Year Ended
(percentage of net sales)
January 28, 2018
 
January 29, 2017
 
January 31, 2016
Arrow Electronics (and affiliates)
11
%
 
10
%
 
9
%
Trend-tek Technology Ltd (and affiliates)
10
%
 
10
%
 
7
%
Samsung Electronics (and affiliates)
8
%
 
7
%
 
7
%
Premier Technical Sales Korea, Inc. (and affiliates) (1)
6
%
 
4
%
 
3
%

(1) Premier is a distributor with a concentration of sales to Samsung. The above percentages represent the Company's estimate of the sales activity related to Samsung that is passing through this distributor.