Concentration of Risk - Schedule of Significant Customers Accounting for at Least 10% of Net Sales During Period (Details)	12 Months Ended
	Jan. 31, 2021	Jan. 26, 2020	Jan. 27, 2019
Net sales revenue
Concentration Risk [Line Items]
Concentration risk, percentage	100.00%	100.00%	100.00%
Customer Concentration Risk | Net sales revenue | Trend-tek Technology Ltd (and affiliates)
Concentration Risk [Line Items]
Concentration risk, percentage	17.00%	13.00%	14.00%
Customer Concentration Risk | Net sales revenue | Frontek Technology Corporation (and affiliates)
Concentration Risk [Line Items]
Concentration risk, percentage	16.00%	11.00%	11.00%
Customer Concentration Risk | Net sales revenue | CEAC International Limited
Concentration Risk [Line Items]
Concentration risk, percentage	11.00%	8.00%	8.00%
Customer Concentration Risk | Net sales revenue | Arrow Electronics (and affiliates)
Concentration Risk [Line Items]
Concentration risk, percentage	9.00%	9.00%	10.00%
Customer Concentration Risk | Net sales revenue | Samsung Electronics (and affiliates)
Concentration Risk [Line Items]
Concentration risk, percentage	2.00%	4.00%	8.00%
Customer Concentration Risk | Net sales revenue | Premier Technical Sales Korea, Inc. (and affiliates)
Concentration Risk [Line Items]
Concentration risk, percentage	6.00%	7.00%	4.00%
Customer Concentration Risk | Accounts Receivable | Trend-tek Technology Ltd (and affiliates)
Concentration Risk [Line Items]
Concentration risk, percentage	14.00%	13.00%
Customer Concentration Risk | Accounts Receivable | Frontek Technology Corporation (and affiliates)
Concentration Risk [Line Items]
Concentration risk, percentage	10.00%	11.00%
Customer Concentration Risk | Accounts Receivable | CEAC International Limited
Concentration Risk [Line Items]
Concentration risk, percentage	14.00%	11.00%