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Income Taxes - Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands | Dec. 27, 2025 | Dec. 28, 2024
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Components of Deferred Tax Assets and Liabilities [Abstract] |  |
Tax credits | $ 33,886 | $ 31,196
Inventory reserve | 12,126 | 12,818
Other reserves and accruals | 11,168 | 10,600
Non-statutory stock options | 1,905 | 2,213
Lease liability | 3,481 | 4,857
Research and development expenditures capitalization | 63,372 | 65,520
Net operating loss carryforwards | 17,125 | 17,295
Gross deferred tax assets | 143,063 | 144,499
Valuation allowance | (50,418) | (47,938)
Total deferred tax assets | 92,645 | 96,561
Right-of-use assets | (2,803) | (4,104)
Acquired intangibles and fixed assets | (1,918) | (445)
Total deferred tax liabilities | (4,721) | (4,549)
Net deferred tax assets | $ 87,924 | $ 92,012

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