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Stock-Based Compensation (Performance Shares, RSUs, Restricted Stock and Share Unit Awards) (Details)
 12 Months Ended
Jul. 27, 2023
shares
Jul. 31, 2023
USD ($)
$ / shares
shares
Jul. 31, 2022
USD ($)
$ / shares
shares
Jul. 31, 2021
USD ($)
$ / shares
shares
Jul. 31, 2017
Dividend Equivalents [Abstract]          
Accrued during the period | $   $ 315,000 $ 389,000 $ 380,000  
Carrying value at period end | $   445,727,000 402,508,000    
Income tax benefit (expense) from settlement of stock-based awards | $   $ (591,000) $ (924,000) $ 142,000  
Performance Shares, RSUs, Restricted Stock and Share Units          
Awards (In Shares)          
Outstanding, Beginning Balance (in shares)   1,110,750 1,068,370 999,574  
Granted (in shares)   1,550,951 797,771 644,272  
Settled (in shares)   (632,267) (641,747) (455,564)  
Canceled/Forfeited (in shares)   (153,204) (113,644) (119,912)  
Outstanding, Ending Balance (in shares)   1,876,230 1,110,750 1,068,370  
Vested, Ending Balance (in shares)   847,243      
Vested and Expected to Vest, Ending Balance (in shares)   1,836,835      
Weighted Average Grant Date Fair Value          
Outstanding, Beginning Balance (in dollars per share) | $ / shares   $ 19.05 $ 21.93 $ 21.15  
Granted (in dollars per share) | $ / shares   10.79 18.77 19.06  
Settled (in dollars per share) | $ / shares   16.69 22.83 17.09  
Canceled/Forfeited (in dollars per share) | $ / shares   16.67 22.78 18.42  
Outstanding, Ending Balance (in dollars per share) | $ / shares   13.21 $ 19.05 $ 21.93  
Vested, Ending Balance (in dollars per share) | $ / shares   13.53      
Vested and Expected to Vest, Ending Balance (in dollars per share) | $ / shares   $ 13.21      
Aggregate Intrinsic Value          
Outstanding, Ending Balance | $   $ 19,062,000      
Vested, Ending Balance | $   8,608,000      
Vested and Expected to Vest, Ending Balance | $   18,662,000      
Additional Disclosures          
Total intrinsic value relating to fully vested stock-based awards converted during the period | $   $ 6,782,000 $ 12,560,000 $ 9,878,000  
Performance shares | Employees | Granted since fiscal 2014          
Additional Disclosures          
Performance period (in years)   3 years      
RSUs and Restricted Stock | Employees | Granted prior to August 12, 2022          
Additional Disclosures          
Vesting period (in years)   5 years      
Common stock, conversion ratio (in shares)   1      
RSUs and Restricted Stock | Employees | Granted after August 12, 2022          
Additional Disclosures          
Vesting period (in years)   3 years      
RSUs and Restricted Stock | Non-Employee Director | Tranche One          
Additional Disclosures          
Vesting period (in years)   1 month      
RSUs and Restricted Stock | Non-Employee Director | Tranche Two          
Additional Disclosures          
Vesting period (in years)   11 months      
RSUs and Restricted Stock | Non-Employee Director | Granted prior to August 12, 2022          
Additional Disclosures          
Vesting period (in years)   5 years      
Common stock, conversion ratio (in shares)   1      
RSUs and Restricted Stock | Non-Employee Director | Granted after August 12, 2022          
Additional Disclosures          
Vesting period (in years)   1 year      
Share units          
Awards (In Shares)          
Granted (in shares) 595,890        
Additional Disclosures          
Common stock, conversion ratio (in shares)         1
Conversion period of vested share units   1 year      
Granted units converted into common stock (in shares)   252,452      
Number of shares issued as result of conversion   153,045      
Number of units settled to date (in shares)   1,482,324      
Dividend equivalents          
Dividend Equivalents [Abstract]          
Accrued during the period | $   $ 315,000 389,000 380,000  
Paid during the period | $   366,000 531,000 $ 279,000  
Carrying value at period end | $   $ 691,000 $ 742,000