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Stock-Based Compensation (Performance Shares, RSUs, Restricted Stock and Share Unit Awards) (Details)
 3 Months Ended 6 Months Ended
Aug. 01, 2022
Jul. 31, 2022
Jul. 31, 2017
Jan. 31, 2024
USD ($)
$ / shares
shares
Oct. 31, 2023
$ / shares
shares
Jan. 31, 2023
USD ($)
Jan. 31, 2024
USD ($)
$ / shares
shares
Jan. 31, 2023
USD ($)
Jul. 31, 2023
USD ($)
Jul. 30, 2017
Dividend Equivalents [Abstract]                    
Reversal of dividend equivalents       $ 13,000     $ 36,000      
Accrual of dividend equivalents, net of reversal ($0.10 per share)           $ 163,000   $ 364,000    
Carrying value at period end       423,301,000     423,301,000   $ 445,727,000  
Income tax (expense) benefit from settlement of stock-based awards       $ 141,000   (182,000) $ (303,000) (545,000)    
Performance shares, RSUs, Restricted stock and share units                    
Awards (In Shares)                    
Outstanding, Beginning Balance (in shares) | shares       2,452,126 1,876,230   1,876,230      
Granted (in shares) | shares         913,908          
Settled (in shares) | shares       (383,565) (296,198)          
Canceled/Forfeited (in shares) | shares       (41,927) (41,814)          
Outstanding, Ending Balance (in shares) | shares       2,026,634 2,452,126   2,026,634      
Vested, Ending Balance (in shares) | shares       452,444     452,444      
Vested and Expected to Vest, Ending Balance (in shares) | shares       1,960,958     1,960,958      
Weighted Average Grant Date Fair Value                    
Outstanding, Beginning Balance (in dollars per share) | $ / shares       $ 11.60 $ 13.21   $ 13.21      
Granted (in dollars per share) | $ / shares         9.93          
Settled (in dollars per share) | $ / shares       10.64 16.03          
Canceled/Forfeited (in dollars per share) | $ / shares       12.78 15.80          
Outstanding, Ending Balance (in dollars per share) | $ / shares       11.76 $ 11.60   11.76      
Vested, Ending Balance (in dollars per share) | $ / shares       14.98     14.98      
Vested and Expected to Vest, Ending Balance (in dollars per share) | $ / shares       $ 11.79     $ 11.79      
Aggregate Intrinsic Value                    
Outstanding, Ending Balance       $ 12,828,592     $ 12,828,592      
Vested, Ending Balance             2,863,969      
Vested and Expected to Vest, Ending Balance       12,412,866     12,412,866      
Additional Disclosures                    
Total intrinsic value relating to fully vested stock-based awards converted during the period       4,789,000   195,000 $ 7,445,000 2,964,000    
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 1 year              
Common stock, conversion ratio (in shares)   1               1
Dividend equivalents                    
Dividend Equivalents [Abstract]                    
Reversal of dividend equivalents       13,000     $ 36,000      
Accrual of dividend equivalents, net of reversal ($0.10 per share)           163,000   364,000    
Paid during the period       151,000   $ 4,000 265,000 $ 350,000    
Carrying value at period end       $ 390,000     $ 390,000   $ 691,000