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Concentration of Risk - Schedule of Significant Customers Accounting for at Least 10% of Net Sales During Period (Details) |  |  | 3 Months Ended | 6 Months Ended
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Jul. 26, 2020 | Jan. 26, 2020 | Jul. 26, 2020 | Jul. 28, 2019 | Jul. 26, 2020 | Jul. 28, 2019
Concentration Risk [Line Items] |  |  |  |  |  |
Concentration risk, percentage |  |  | 100.00% | 100.00% | 100.00% | 100.00%
Net sales |  |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |  |
Concentration risk, percentage |  |  | 100.00% | 100.00% | 100.00% | 100.00%
Customer Concentration Risk | Net sales | Trend-tek Technology Ltd. (and affiliates) |  |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |  |
Concentration risk, percentage |  |  | 21.00% | 14.00% | 18.00% | 13.00%
Customer Concentration Risk | Net sales | Frontek Technology Corporation (and affiliates) |  |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |  |
Concentration risk, percentage |  |  | 15.00% | 10.00% | 13.00% | 10.00%
Customer Concentration Risk | Net sales | CEAC International Limited |  |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |  |
Concentration risk, percentage |  |  | 12.00% | 8.00% | 12.00% | 6.00%
Customer Concentration Risk | Net sales | Arrow Electronics (and affiliates) |  |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |  |
Concentration risk, percentage |  |  | 10.00% | 9.00% | 9.00% | 9.00%
Customer Concentration Risk | Net sales | Premier Technical Sales Korea, Inc. (and affiliates) |  |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |  |
Concentration risk, percentage |  |  | 2.00% | 8.00% | 5.00% | 7.00%
Customer Concentration Risk | Net sales | Samsung Electronics (and affiliates) |  |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |  |
Concentration risk, percentage |  |  | 2.00% | 3.00% | 2.00% | 6.00%
Customer Concentration Risk | Net sales | Huawei Technologies Co. Ltd. (and affiliates) |  |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |  |
Concentration risk, percentage |  |  | 4.00% | 5.00% | 5.00% | 10.00%
Customer Concentration Risk | Accounts Receivable | Trend-tek Technology Ltd. (and affiliates) |  |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |  |
Concentration risk, percentage | 13.00% | 13.00% |  |  |  |
Customer Concentration Risk | Accounts Receivable | Frontek Technology Corporation (and affiliates) |  |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |  |
Concentration risk, percentage | 13.00% | 11.00% |  |  |  |
Customer Concentration Risk | Accounts Receivable | CEAC International Limited |  |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |  |
Concentration risk, percentage | 14.00% | 11.00% |  |  |  |

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