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Summary of Significant Accounting Policies - Concentrations of Credit Risk and Significant Customers (Details) | 12 Months Ended
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Mar. 25, 2022 | Mar. 26, 2021 | Mar. 27, 2020
Trade Accounts Receivable | Customer Concentration Risk | Sanken |  |  |
Concentration Risk [Line Items] |  |  |
Concentration risk, percentage | 23.80% | 23.20% |
Revenue Benchmark | Customer Concentration Risk | Sanken |  |  |
Concentration Risk [Line Items] |  |  |
Concentration risk, percentage | 19.40% | 17.70% | 28.40%
Revenue Benchmark | Geographic Concentration Risk | Non-US |  |  |
Concentration Risk [Line Items] |  |  |
Concentration risk, percentage | 85.90% | 86.10% | 81.70%
Revenue Benchmark | Geographic Concentration Risk | Japan |  |  |
Concentration Risk [Line Items] |  |  |
Concentration risk, percentage | 19.40% | 17.70% | 28.40%
Revenue Benchmark | Geographic Concentration Risk | Greater China |  |  |
Concentration Risk [Line Items] |  |  |
Concentration risk, percentage | 25.00% | 26.60% | 18.70%
Revenue Benchmark | Geographic Concentration Risk | South Korea |  |  |
Concentration Risk [Line Items] |  |  |
Concentration risk, percentage | 10.50% | 10.50% |

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