Concentration of Risk - Schedule of Significant Customers Accounting for at Least 10% of Net Sales During Period (Details) - Sales Revenue, Goods, Net [Member]		3 Months Ended		6 Months Ended
		Jul. 30, 2017	Jul. 31, 2016	Jul. 30, 2017	Jul. 31, 2016
Concentration Risk [Line Items]
Concentration risk, percentage		100.00%	100.00%	100.00%	100.00%
Customer Concentration Risk [Member] | Arrow Electronics And Affiliates [Member]
Concentration Risk [Line Items]
Concentration risk, percentage		12.00%	10.00%	10.00%	9.00%
Customer Concentration Risk [Member] | Trend-tek Technology Ltd And Affiliates [Member]
Concentration Risk [Line Items]
Concentration risk, percentage		11.00%	8.00%	10.00%	10.00%
Customer Concentration Risk [Member] | Samsung Electronics And Affiliates [Member]
Concentration Risk [Line Items]
Concentration risk, percentage		7.00%	8.00%	7.00%	8.00%
Customer Concentration Risk [Member] | Premier Technical Sales Korea, Inc. And Affiliates [Member]
Concentration Risk [Line Items]
Concentration risk, percentage	[1]	6.00%	4.00%	6.00%	4.00%

[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.