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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Additional Information (Details)
shares in Thousands, $ in Thousands
12 Months Ended
Jul. 29, 2023
USD ($)
store
class
segment
shares
Jul. 30, 2022
USD ($)
shares
Jul. 31, 2021
USD ($)
Business Acquisition [Line Items]      
Number of stores acquired | store 34    
Depreciation $ 1,709 $ 1,583  
Fiscal year period 364 days 364 days  
Number of operating segments | segment 1    
Credit and debit card receivables $ 11,891 $ 11,653  
Percentage of LIFO inventory 64.00% 61.00%  
LIFO reserve inventory $ 21,238 $ 18,616  
Operating lease assets 274,100 293,295  
Present value of lease liabilities 287,072    
Adjustment to retained earnings from adoption of ASU 2016-02 410,166 372,109 $ 341,473
Financing obligations (21,290)    
Advertising expense 10,658 10,320  
Indefinite-lived intangible assets $ 13,299 $ 13,299  
Number of common stock classes | class 2    
Common stock cash dividends, percent Class A is entitled greater than Class B 54.00%    
Class A Common Stock      
Business Acquisition [Line Items]      
Class A shares excluded from computation of earnings per share (in shares) | shares 88 97  
Restricted Stock Units (RSUs)      
Business Acquisition [Line Items]      
Class A shares excluded from computation of earnings per share (in shares) | shares 503 359  
Buildings      
Business Acquisition [Line Items]      
Useful life 30 years    
Store fixtures and equipment | Minimum      
Business Acquisition [Line Items]      
Useful life 5 years    
Store fixtures and equipment | Maximum      
Business Acquisition [Line Items]      
Useful life 10 years    
Vehicles      
Business Acquisition [Line Items]      
Useful life 3 years    
Wakefern      
Business Acquisition [Line Items]      
Demand deposits invested at related party Wakefern $ 122,028 $ 110,739  
Gourmet Garage Specialty Markets      
Business Acquisition [Line Items]      
Number of stores acquired | store 4