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Income Taxes - Narrative (Detail) - USD ($) | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Dec. 25, 2020 | Dec. 27, 2019 | Dec. 25, 2020 | Dec. 27, 2019 | Mar. 27, 2020 | Mar. 29, 2019
Income Tax Disclosure [Line Items] |  |  |  |  |  |
Statutory income tax rate |  |  |  |  | 21.00% | 21.00%
Tax expense (benefit) of TCJA - FDII |  |  |  |  | $ 1,188,000 | $ 3,010,000
Tax expense (benefit) of TCJA - GILTI |  |  |  |  | 86,000 | 53,000
Tax expense (benefit) of TCJA - BEAT |  |  |  |  | 1,694,000 |
Operating loss carryforward |  |  |  |  | 2,037,000 | 2,597,000
Deferred income taxes and tax credits |  |  |  |  | 4,206,000 | 3,837,000
Deferred tax assets, valuation allowance |  |  |  |  | 4,206,000 | 3,837,000
Gross unrecognized tax benefit |  |  |  |  | 2,559,000 | 6,246,000
Unrecognized tax benefits that would impact effective tax rate |  |  |  |  | 2,501,000 | 6,194,000
Net increase and decrease in interest and penalties |  |  |  |  | 841,000 | (155,000)
Accrued interest and penalties |  |  |  |  | 354,000 | 231,000
Settlement of IRS transfer pricing audits |  |  | $ 5,500,000 |  | 5,491,000 |
Income tax (benefit) expense | $ (30,523,000) | $ 1,542,000 | $ (27,913,000) | $ 11,710,000 | 16,173,000 | $ 14,601,000
Income tax expense (benefit), rates | 85.80% | 14.70% | 150.90% | 33.00% |  |
Pre-tax income (loss) | $ (35,583,000) | $ 10,500,000 | $ (18,501,000) | $ 35,486,000 |  |
Income tax reconciliation, related to stock-based compensation charge |  |  | $ 40,440,000 |  |  |
Discrete tax benefits | $ 18,149,000 |  |  |  |  |
Sanken |  |  |  |  |  |
Income Tax Disclosure [Line Items] |  |  |  |  |  |
Income tax settlements, one-time capital contribution to neutralize cash impact |  |  |  |  | 9,500,000 |
Previously Reported |  |  |  |  |  |
Income Tax Disclosure [Line Items] |  |  |  |  |  |
Settlement of IRS transfer pricing audits |  |  |  |  | 9,482,000 |
Federal |  |  |  |  |  |
Income Tax Disclosure [Line Items] |  |  |  |  |  |
Operating loss carryforward |  |  |  |  | 0 |
Minnesota |  |  |  |  |  |
Income Tax Disclosure [Line Items] |  |  |  |  |  |
Operating loss carryforward |  |  |  |  | 600,000 |
Research credit |  |  |  |  | 536,000 |
Europe |  |  |  |  |  |
Income Tax Disclosure [Line Items] |  |  |  |  |  |
Research credit |  |  |  |  | 3,050,000 |
Thailand |  |  |  |  |  |
Income Tax Disclosure [Line Items] |  |  |  |  |  |
Operating loss carryforward |  |  |  |  | 1,500,000 |
Massachusetts |  |  |  |  |  |
Income Tax Disclosure [Line Items] |  |  |  |  |  |
Operating loss carryforward |  |  |  |  | $ 2,706,000 |

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- Definition The amount of estimated penalties and interest accrued as of the balance sheet date arising from income tax examinations. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32718-109319 + Details
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