Stock-Based Compensation (Stock Options) (Details)				3 Months Ended		6 Months Ended
	Aug. 01, 2022	Jul. 31, 2022	Jul. 31, 2017	Jan. 31, 2025 USD ($) $ / shares shares	Jan. 31, 2024 USD ($)	Jan. 31, 2025 USD ($) $ / shares shares	Jan. 31, 2024 USD ($)	Jan. 10, 2025 USD ($)	Jul. 31, 2023	Jul. 30, 2017
Weighted Average Remaining Contractual Term (Years)
Outstanding, Ending Balance						3 years 11 months 12 days
Aggregated Intrinsic Value
Outstanding, Ending Balance | $				$ 0		$ 0
Additional Disclosures
Estimated forfeitures related to unrecognized compensation expense | $				$ 6,700,000
Forfeitures related to total unrecognized stock based compensation authorization pending | $								$ 2,000,000
Stock options
Awards (In Shares)
Outstanding, Beginning Balance (in shares) | shares				141,190		141,190
Outstanding, Ending Balance (in shares) | shares				135,690		135,690
Expired/canceled (in shares) | shares				(5,500)
Exercisable, Ending Balance (in shares) | shares				128,440		128,440
Vested and Expected to Vest, Ending Balance (in shares) | shares				135,287		135,287
Weighted Average Exercise Price (Per Share)
Outstanding, Beginning Balance (in dollars per share)				$ 20.61		$ 20.61
Expired/canceled (in dollars per share)				17.88
Outstanding, Ending Balance (in dollars per share)				20.72		20.72
Exercisable, Ending Balance (in dollars per share)				20.88		20.88
Vested and Expected to Vest, Ending Balance (in dollars per share)				$ 20.73		$ 20.73
Weighted Average Remaining Contractual Term (Years)
Exercisable, Ending Balance						3 years 10 months 13 days
Vested And Expected To Vest, Ending Balance						3 years 11 months 12 days
Aggregated Intrinsic Value
Exercisable, Ending Balance | $				$ 0		$ 0
Vested and Expected to Vest, Ending Balance | $				0		$ 0
Additional Disclosures
Exercise price, lower range limit (in dollars per share)						$ 17.88
Exercise price, upper range limit (in dollars per share)						$ 28.35
Stock options | Maximum
Additional Disclosures
Contractual term (in years)						10 years
Stock options | Tranche Two
Additional Disclosures
Vesting period						5 years
Performance shares, RSUs, Restricted stock and share units
Additional Disclosures
Total intrinsic value relating to stock-based awards exercised during the period | $				$ 1,632,000	$ 4,789,000	$ 2,268,000	$ 7,445,000
Performance shares | Granted since fiscal 2014 | Employees
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