Concentration of Risk - Schedule of Significant Customers Accounting for at Least 10% of Net Sales During Period (Details) - Customer Concentration Risk			3 Months Ended		6 Months Ended
	Jan. 31, 2021	Aug. 01, 2018	Aug. 01, 2021	Jul. 26, 2020	Aug. 01, 2021	Jul. 26, 2020
Net sales | Frontek Technology Corporation (and affiliates)
Concentration Risk [Line Items]
Concentration risk, percentage			19.00%	15.00%	19.00%	13.00%
Net sales | Trend-tek Technology Ltd. (and affiliates)
Concentration Risk [Line Items]
Concentration risk, percentage			18.00%	21.00%	17.00%	18.00%
Net sales | Arrow Electronics (and affiliates)
Concentration Risk [Line Items]
Concentration risk, percentage			11.00%	10.00%	11.00%	9.00%
Net sales | CEAC International Limited
Concentration Risk [Line Items]
Concentration risk, percentage			11.00%	12.00%	10.00%	12.00%
Accounts Receivable | Frontek Technology Corporation (and affiliates)
Concentration Risk [Line Items]
Concentration risk, percentage	10.00%	20.00%
Accounts Receivable | Trend-tek Technology Ltd. (and affiliates)
Concentration Risk [Line Items]
Concentration risk, percentage	14.00%	12.00%
Accounts Receivable | CEAC International Limited
Concentration Risk [Line Items]
Concentration risk, percentage	14.00%	11.00%