Concentration of Risk - Schedule of Significant Customers Accounting for at Least 10% of Net Sales During Period (Details) - Net sales [Member]		3 Months Ended		9 Months Ended
		Oct. 29, 2017	Oct. 30, 2016	Oct. 29, 2017	Oct. 30, 2016
Concentration Risk [Line Items]
Concentration risk, percentage		100.00%	100.00%	100.00%	100.00%
Customer Concentration Risk [Member] | Premier Technical Sales Korea, Inc. And Affiliates [Member]
Concentration Risk [Line Items]
Concentration risk, percentage	[1]	5.00%	6.00%	6.00%	5.00%
Customer Concentration Risk [Member] | Arrow Electronics And Affiliates [Member]
Concentration Risk [Line Items]
Concentration risk, percentage		13.00%	11.00%	10.00%	9.00%
Customer Concentration Risk [Member] | Trend-tek Technology Ltd And Affiliates [Member]
Concentration Risk [Line Items]
Concentration risk, percentage		10.00%	8.00%	10.00%	10.00%
Customer Concentration Risk [Member] | Samsung Electronics And Affiliates [Member]
Concentration Risk [Line Items]
Concentration risk, percentage		9.00%	9.00%	8.00%	8.00%

[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.