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Investment Securities - Additional Information (Details) | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 28, 2025 USD ($) Security | Sep. 29, 2024 USD ($) | Sep. 28, 2025 USD ($) Security | Sep. 29, 2024 USD ($) | Dec. 29, 2024 USD ($)
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Proceeds from the sale of available-for-sale securities | $ 0 | $ 0 | $ 404,000 | $ 0 | $ 0
Unrealized Losses | 0 |  | 0 |  | 25,000
Allowance for Credit Losses | $ 0 |  | $ 0 |  | $ 0
AFS Securities |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Number of Securities Issuances for unrealized losses | Security | 0 |  | 0 |  |

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