Concentration of Risk - Schedule of Significant Customers Accounting for at Least 10% of Net Sales (Details) - Net sales revenue		12 Months Ended
		Jan. 28, 2018	Jan. 29, 2017	Jan. 31, 2016
Geographic Information And Concentration Of Risk [Line Items]
Minimum concentration risk threshold		10.00%
Arrow Electronics (and affiliates)
Geographic Information And Concentration Of Risk [Line Items]
Concentration risk, percentage		11.00%	10.00%	9.00%
Trend-Tek Technology Ltd (and affiliates)
Geographic Information And Concentration Of Risk [Line Items]
Concentration risk, percentage		10.00%	10.00%	7.00%
Samsung Electronics (and affiliates)
Geographic Information And Concentration Of Risk [Line Items]
Concentration risk, percentage		8.00%	7.00%	7.00%
Premier Technical Sales Kore, Inc. (and affiliates)
Geographic Information And Concentration Of Risk [Line Items]
Concentration risk, percentage	[1]	6.00%	4.00%	3.00%

[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.