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Income Taxes - Narrative (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Mar. 29, 2024 | Mar. 31, 2023 | Mar. 25, 2022 | Mar. 26, 2021
Income Tax Contingency [Line Items] |  |  |  |
Capitalized research and development costs | $ 62,651 | $ 30,582 |  |
Deferred income tax, estimated rate benefit | 11,091 |  |  |
Provision for uncertain tax positions | 4,980 | 2,408 | $ 2,459 | $ 2,554
Unrecognized tax benefits that would impact effective tax rate | 4,968 | 2,392 | 2,433 |
Unrecognized tax benefits, income tax penalties and interest expense | 826 | 39 | $ 58 |
Unrecognized tax benefits, income tax penalties and interest accrued | 906 | $ 445 |  |
Research And Development |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |
Tax credit carryforward | 290 |  |  |
Research And Development | Crocus |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |
Tax credit carryforward | 351 |  |  |
Research And Development | Allegro Microsystems, Inc. |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |
Tax credit carryforward | 3,000 |  |  |
Domestic Tax Authority |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |
Operating loss carryforwards | 7,707 |  |  |
Domestic Tax Authority | Crocus |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |
Operating loss carryforwards | 36,697 |  |  |
State and Local Jurisdiction |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |
Operating loss carryforwards | 722 |  |  |
State and Local Jurisdiction | Crocus |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |
Operating loss carryforwards | 10,345 |  |  |
State and Local Jurisdiction | Allegro Microsystems, Inc. |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |
Operating loss carryforwards | $ 160 |  |  |

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