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Income Taxes - Effective Tax Rate Differs from the Statutory Federal Income Tax Rate (Details) | 12 Months Ended
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Dec. 28, 2024 | Dec. 30, 2023
Company's effective tax rate differs from the statutory federal income tax rate |  |
Income tax provision at statutory rate | 21.00% | 21.00%
State income taxes, net of federal benefit | 3.30% | 3.20%
Permanent differences | (0.30%) | (0.30%)
Stock-based compensation | (4.90%) | (1.40%)
Rate change impact | 0.30% | (0.90%)
Research and development credits | (0.50%) | 1.30%
Change in valuation allowance | (19.90%) | (24.00%)
Foreign rate differential | (0.50%) | (0.70%)
Other | 0.70% | 1.00%
Effective tax rate | (0.80%) | (0.80%)

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