Stock-Based Compensation (Performance Shares, RSUs, Restricted Stock and Share Unit Awards) (Details)		12 Months Ended
	Jul. 31, 2022 $ / shares shares	Jul. 31, 2025 USD ($) $ / shares shares	Jul. 31, 2024 USD ($) $ / shares shares	Jul. 31, 2023 USD ($) $ / shares shares
Dividend Equivalents [Abstract]
Reversal of dividend equivalents				$ 315,000
Carrying value at period end		$ 446,868,000	$ 426,105,000
Income tax benefit (expense) from settlement of stock-based awards		$ 0	$ (723,000)	$ (591,000)
Performance Shares, RSUs, Restricted Stock and Share Units
Awards (In Shares)
Outstanding, Beginning Balance (in shares) | shares		1,800,288	1,876,230	1,110,750
Granted (in shares) | shares		1,677,677	1,731,760	1,550,951
Settled (in shares) | shares		(855,870)	(1,042,860)	(632,267)
Canceled/Forfeited (in shares) | shares		(946,990)	(764,842)	(153,204)
Outstanding, Ending Balance (in shares) | shares	1,110,750	1,675,105	1,800,288	1,876,230
Vested, Ending Balance (in shares) | shares		122,554
Vested and Expected to Vest, Ending Balance (in shares) | shares		1,632,321
Weighted Average Grant Date Fair Value
Outstanding, Beginning Balance (in dollars per share) | $ / shares		$ 10.61	$ 13.21	$ 19.05
Granted (in dollars per share) | $ / shares		4.57	6.71	10.79
Settled (in dollars per share) | $ / shares		9.37	9.77	16.69
Canceled/Forfeited (in dollars per share) | $ / shares		6.54	9.28	16.67
Outstanding, Ending Balance (in dollars per share) | $ / shares	$ 19.05	6.53	$ 10.61	$ 13.21
Vested, Ending Balance (in dollars per share) | $ / shares		13.03
Vested and Expected to Vest, Ending Balance (in dollars per share) | $ / shares		$ 6.61
Aggregate Intrinsic Value
Outstanding, Ending Balance		$ 3,635,000
Vested, Ending Balance		266,000
Vested and Expected to Vest, Ending Balance		3,542,000
Additional Disclosures
Total intrinsic value relating to fully vested stock-based awards converted during the period		$ 2,420,000	$ 7,844,000	$ 6,782,000
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
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
RSUs and Restricted Stock | Non-Employee Director | Granted after August 12, 2022
Additional Disclosures
Vesting period (in years)		1 year
Dividend equivalents
Dividend Equivalents [Abstract]
Reversal of dividend equivalents		$ 42,000	107,000	315,000
Paid during the period		157,000	268,000	$ 366,000
Carrying value at period end		$ 117,000	$ 316,000