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Stock-Based Compensation (Performance Shares, RSUs, Restricted Stock and Share Unit Awards) (Details)
 3 Months Ended 12 Months Ended
Jul. 31, 2017
Oct. 31, 2022
USD ($)
$ / shares
shares
Oct. 31, 2021
USD ($)
Jul. 31, 2019
Jul. 31, 2022
USD ($)
Jul. 31, 2020
Dividend Equivalents [Abstract]            
Accrual of dividend equivalents, net of reversal ($0.10 per share)   $ 201,000 $ 88,000      
Carrying value at period end   416,550,000     $ 402,508,000  
Income tax (expense) benefit from settlement of stock-based awards   $ 363,000 (53,000)      
Performance shares, RSUs, Restricted stock and share units            
Awards (In Shares)            
Outstanding, Beginning Balance (in shares) | shares   1,110,750        
Granted (in shares) | shares   785,092        
Settled (in shares) | shares   (256,069)        
Canceled/Forfeited (in shares) | shares   (37,805)        
Outstanding, Ending Balance (in shares) | shares   1,601,968        
Vested, Ending Balance (in shares) | shares   532,533        
Vested and Expected to Vest, Ending Balance (in shares) | shares   1,547,797        
Weighted Average Grant Date Fair Value            
Outstanding, Beginning Balance (in dollars per share) | $ / shares   $ 19.05        
Granted (in dollars per share) | $ / shares   11.13        
Settled (in dollars per share) | $ / shares   24.55        
Canceled/Forfeited (in dollars per share) | $ / shares   16.44        
Outstanding, Ending Balance (in dollars per share) | $ / shares   14.35        
Vested, Ending Balance (in dollars per share) | $ / shares   15.68        
Vested and Expected to Vest, Ending Balance (in dollars per share) | $ / shares   $ 14.33        
Aggregate Intrinsic Value            
Outstanding, Ending Balance   $ 17,702,000        
Vested, Ending Balance   5,884,000        
Vested and Expected to Vest, Ending Balance   17,103,000        
Additional Disclosures            
Total intrinsic value relating to fully vested stock-based awards converted during the period   $ 2,769,000 4,895,000      
Performance shares | Employees | Granted since fiscal 2014            
Additional Disclosures            
Performance period (in years)   3 years        
RSUs and restricted stock | Employees            
Additional Disclosures            
Vesting period   3 years   5 years    
Common stock, conversion ratio (in shares)   1        
RSUs and restricted stock | Non-Employee Director            
Additional Disclosures            
Vesting period   1 year   5 years    
Common stock, conversion ratio (in shares)           1
RSUs and restricted stock | Non-Employee Director | Tranche One            
Additional Disclosures            
Vesting period   1 month        
RSUs and restricted stock | Non-Employee Director | Tranche Two            
Additional Disclosures            
Vesting period   11 months        
Share units            
Additional Disclosures            
Conversion period of vested share units 1 year          
Dividend equivalents            
Dividend Equivalents [Abstract]            
Accrual of dividend equivalents, net of reversal ($0.10 per share)   $ 201,000 88,000      
Paid during the period   346,000 $ 315,000      
Carrying value at period end   $ 597,000     $ 742,000