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Stock-Based Compensation (Performance Shares, RSUs, Restricted Stock and Share Unit Awards) (Details)
 12 Months Ended
Jul. 31, 2024
USD ($)
$ / shares
shares
Jul. 27, 2024
shares
Jul. 31, 2022
$ / shares
shares
Jul. 31, 2024
USD ($)
$ / shares
shares
Jul. 31, 2023
USD ($)
$ / shares
shares
Jul. 31, 2022
USD ($)
$ / shares
shares
Jul. 31, 2017
Dividend Equivalents [Abstract]              
Accrued during the period | $         $ 315,000 $ 389,000  
Carrying value at period end | $ $ 426,105,000     $ 426,105,000 445,727,000    
Income tax benefit (expense) from settlement of stock-based awards | $       $ (723,000) $ (591,000) $ (924,000)  
Performance Shares, RSUs, Restricted Stock and Share Units              
Awards (In Shares)              
Outstanding, Beginning Balance (in shares)       1,876,230 1,110,750 1,068,370  
Granted (in shares)       1,731,760 1,550,951 797,771  
Settled (in shares)       (1,042,860) (632,267) (641,747)  
Canceled/Forfeited (in shares)       (764,842) (153,204) (113,644)  
Outstanding, Ending Balance (in shares) 1,800,288   1,110,750 1,800,288 1,876,230 1,110,750  
Vested, Ending Balance (in shares) 583,209     583,209      
Vested and Expected to Vest, Ending Balance (in shares) 1,739,662     1,739,662      
Weighted Average Grant Date Fair Value              
Outstanding, Beginning Balance (in dollars per share) | $ / shares       $ 13.21 $ 19.05 $ 21.93  
Granted (in dollars per share) | $ / shares       6.71 10.79 18.77  
Settled (in dollars per share) | $ / shares       9.77 16.69 22.83  
Canceled/Forfeited (in dollars per share) | $ / shares       9.28 16.67 22.78  
Outstanding, Ending Balance (in dollars per share) | $ / shares $ 10.61   $ 19.05 10.61 $ 13.21 $ 19.05  
Vested, Ending Balance (in dollars per share) | $ / shares 12.30     12.30      
Vested and Expected to Vest, Ending Balance (in dollars per share) | $ / shares $ 10.61     $ 10.61      
Aggregate Intrinsic Value              
Outstanding, Ending Balance | $ $ 5,833,000     $ 5,833,000      
Vested, Ending Balance | $       1,890,000      
Vested and Expected to Vest, Ending Balance | $ $ 5,637,000     5,637,000      
Additional Disclosures              
Total intrinsic value relating to fully vested stock-based awards converted during the period | $       $ 7,844,000 $ 6,782,000 $ 12,560,000  
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     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 | Granted prior to August 12, 2022              
Additional Disclosures              
Vesting period (in years)     5 years        
Common stock, conversion ratio (in shares) 1     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) 479,257            
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)   243,098          
Number of shares issued as result of conversion   158,941          
Number of units settled to date (in shares) 2,147,701     2,147,701      
Dividend equivalents              
Dividend Equivalents [Abstract]              
Accrued during the period | $       $ 107,000 315,000 389,000  
Paid during the period | $       268,000 366,000 $ 531,000  
Carrying value at period end | $ $ 316,000     $ 316,000 $ 691,000