v3.26.1
Acquisition - Additional Information (Detail) - USD ($)
$ in Thousands
3 Months Ended 4 Months Ended
Feb. 21, 2025
Jul. 12, 2025
Apr. 25, 2026
Apr. 19, 2025
Business Combination [Line Items]        
Acquisition and integration-related costs     $ 1,897 $ 13,764
Increase (Decrease) in pro forma net income attributable to flowers foods       4,400
Goodwill recorded for acquisition and not deductible for tax purposes $ 367,200      
Simple Mills        
Business Combination [Line Items]        
Business acquisition completed date Feb. 21, 2025      
Business acquisition consideration amount $ 846,238      
Percentage of outstanding membership interests 100.00%      
Goodwill adjustment   $ 19,000 $ 700  
Business acquisition, cash acquired $ (38,833)      
Contributed net sales       24,300
Net loss       $ 4,200
Simple Mills | Payable to Sellers upon Realization of Certain Tax Benefits        
Business Combination [Line Items]        
Business acquisition consideration amount $ 15,500