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Postretirement Plans - Additional Information (Detail) - USD ($) | 4 Months Ended |
--- | --- | ---
Apr. 19, 2025 | Apr. 20, 2024 | Oct. 08, 2022
Pension and Other Postretirement Benefits Disclosure [Line Items] |  |  |
Multi-employer pension plan withdrawal liability |  |  | $ 1,300,000
Holsum Bakery |  |  |
Pension and Other Postretirement Benefits Disclosure [Line Items] |  |  |
Multi-employer pension plan withdrawal costs |  | $ 1,400,000 |
Selling, Distribution and Administrative expenses | Holsum Bakery |  |  |
Pension and Other Postretirement Benefits Disclosure [Line Items] |  |  |
Multi-employer pension plan additional withdrawal cost |  | 100,000 |
Plan No. 1 |  |  |
Pension and Other Postretirement Benefits Disclosure [Line Items] |  |  |
Voluntarily contributions made by an employer | $ 0 | $ 0 |

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- Details
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