v3.26.1
Acquisition - Additional Information (Detail) - USD ($)
3 Months Ended 4 Months Ended 6 Months Ended
Feb. 21, 2025
Jul. 18, 2026
Jul. 12, 2025
Apr. 25, 2026
Jul. 18, 2026
Jul. 12, 2025
Business Combination [Line Items]            
Acquisition and integration-related costs   $ 0 $ 871,000 $ 1,897,000 $ 1,897,000 $ 14,635,000
Increase (Decrease) in pro forma net income attributable to flowers foods     2,400,000     6,800,000
Goodwill recorded for acquisition and not deductible for tax purposes $ 367,200,000          
Simple Mills            
Business Combination [Line Items]            
Business acquisition completed date Feb. 21, 2025          
Business acquisition consideration amount $ 846,238,000          
Percentage of outstanding membership interests 100.00%          
Goodwill adjustment     19,000,000 $ 700,000    
Business acquisition, cash acquired $ (38,833,000)          
Contributed net sales     61,400,000     85,700,000
Net loss     $ 2,100,000     $ 6,300,000
Simple Mills | Payable to Sellers upon Realization of Certain Tax Benefits            
Business Combination [Line Items]            
Business acquisition consideration amount $ 15,500,000