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