Stock-Based Compensation (Stock Options) (Details)				3 Months Ended			9 Months Ended
	Aug. 01, 2022	Jul. 31, 2022	Jul. 31, 2017	Apr. 30, 2025 USD ($) $ / shares shares	Jan. 31, 2025 $ / shares shares	Apr. 30, 2024 USD ($)	Apr. 30, 2025 USD ($) $ / shares shares	Apr. 30, 2024 USD ($)	Jun. 09, 2025 USD ($)	Jul. 31, 2023
Weighted Average Remaining Contractual Term (Years)
Outstanding, Ending Balance							3 years 9 months 18 days
Aggregated Intrinsic Value
Outstanding, Ending Balance | $				$ 0			$ 0
Additional Disclosures
Estimated forfeitures related to unrecognized compensation expense | $				$ 6,700,000
Subsequent Event
Additional Disclosures
Forfeitures related to total unrecognized stock based compensation authorization pending | $									$ 2,000,000
Stock options
Awards (In Shares)
Outstanding, Beginning Balance (in shares) | shares				135,690	141,190		141,190
Outstanding, Ending Balance (in shares) | shares				125,470	135,690		125,470
Expired/canceled (in shares) | shares				(10,220)	(5,500)
Exercisable, Ending Balance (in shares) | shares				119,220			119,220
Vested and Expected to Vest, Ending Balance (in shares) | shares				125,395			125,395
Weighted Average Exercise Price (Per Share)
Outstanding, Beginning Balance (in dollars per share)				$ 20.72	$ 20.61		$ 20.61
Expired/canceled (in dollars per share)				23.23	17.88
Outstanding, Ending Balance (in dollars per share)				20.51	$ 20.72		20.51
Exercisable, Ending Balance (in dollars per share)				20.65			20.65
Vested and Expected to Vest, Ending Balance (in dollars per share)				$ 20.51			$ 20.51
Weighted Average Remaining Contractual Term (Years)
Exercisable, Ending Balance							3 years 8 months 23 days
Vested And Expected To Vest, Ending Balance							3 years 9 months 18 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 | $				$ 13,000		$ 33,000	$ 2,281,000	$ 7,478,000
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