Basis of Presentation - Additional Information (Detail) |
3 Months Ended | 4 Months Ended | 9 Months Ended | ||||
|---|---|---|---|---|---|---|---|
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Oct. 10, 2026
USD ($)
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Jul. 18, 2026
USD ($)
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Jan. 03, 2026
USD ($)
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Oct. 04, 2025
USD ($)
|
Apr. 19, 2025
USD ($)
|
Oct. 10, 2026
USD ($)
Segment
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Oct. 04, 2025
USD ($)
|
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| Basis of Presentation [Line Items] | |||||||
| Number of operating segments | Segment | 1 | ||||||
| Segment reporting, description | The company has identified two operating segments based on how business activities are managed and evaluated, legacy Flowers Foods and Simple Mills. Simple Mills qualifies as an operating segment as it meets the criteria for being a business and has discrete financial information available that is regularly reviewed by the chief executive officer (the "CEO"), who is the chief operating decision maker (the "CODM"), to assess the performance and allocate resources. As Simple Mills shares similar economic characteristics with legacy Flowers Foods, we aggregate Simple Mills and legacy Flowers Foods as one operating segment for the purpose of determining our one reportable segment. | ||||||
| Segment Reporting, CODM, Individual Title and Position or Group Name [Extensible Enumeration] | srt:ChiefExecutiveOfficerMember | ||||||
| Number of reportable segments | Segment | 1 | ||||||
| Identifiable and measurable costs | $ 2,700,000 | ||||||
| Reimbursement received | $ 500,000 | $ 2,100,000 | |||||
| Reimbursement of indirect loss | $ 600,000 | ||||||
| Investment in unconsolidated affiliate | 0 | 1,481,000 | 0 | ||||
| Asset impairment charges and equipment relocation costs | 1,481,000 | $ 5,495,000 | |||||
| Loss of remaining investment | 1,500,000 | ||||||
| Proceeds from equity method investment, distribution | 0 | ||||||
| Business Process Improvement Cost | 906,000 | $ 949,000 | 3,157,000 | $ 2,311,000 | |||
| Spare parts and supplies | 915,315,000 | $ 952,725,000 | 915,315,000 | ||||
| Bailey Street Bakery | |||||||
| Basis of Presentation [Line Items] | |||||||
| Severance costs | $ 1,300,000 | ||||||
| Asset impairment charges and equipment relocation costs | $ 6,100,000 | ||||||
| Spare Parts and Supplies | |||||||
| Basis of Presentation [Line Items] | |||||||
| Spare parts and supplies | $ 101,800,000 | $ 101,800,000 | |||||