Concentration of Risk - Schedule of Significant Customers Accounting for at Least 10% of Net Sales During Period (Details)	3 Months Ended
	Apr. 28, 2019	Apr. 29, 2018
Net sales
Concentration Risk [Line Items]
Concentration risk, percentage	100.00%	100.00%
Customer Concentration Risk | Accounts Receivable | Huawei Technologies Co., Ltd. (and affiliates)
Concentration Risk [Line Items]
Concentration risk, percentage	18.00%	7.00%
Customer Concentration Risk | Accounts Receivable | Trend-tek Technology Ltd (and affiliates)
Concentration Risk [Line Items]
Concentration risk, percentage	10.00%	11.00%
Customer Concentration Risk | Accounts Receivable | Frontek Technology Corporation (and affiliates)
Concentration Risk [Line Items]
Concentration risk, percentage	12.00%	10.00%
Customer Concentration Risk | Net sales | Huawei Technologies Co., Ltd. (and affiliates)
Concentration Risk [Line Items]
Concentration risk, percentage	16.00%	6.00%
Customer Concentration Risk | Net sales | Trend-tek Technology Ltd (and affiliates)
Concentration Risk [Line Items]
Concentration risk, percentage	12.00%	12.00%
Customer Concentration Risk | Net sales | Frontek Technology Corporation (and affiliates)
Concentration Risk [Line Items]
Concentration risk, percentage	10.00%	8.00%
Customer Concentration Risk | Net sales | Arrow Electronics (and affiliates)
Concentration Risk [Line Items]
Concentration risk, percentage	9.00%	12.00%
Customer Concentration Risk | Net sales | Samsung Electronics (and affiliates)
Concentration Risk [Line Items]
Concentration risk, percentage	8.00%	8.00%
Customer Concentration Risk | Net sales | Premier Technical Sales Korea, Inc. (and affiliates)
Concentration Risk [Line Items]
Concentration risk, percentage	5.00%	5.00%