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, 2025 USD ($) $ / shares shares	Oct. 31, 2024 $ / shares shares	Jan. 31, 2024 USD ($)	Jan. 31, 2025 USD ($) $ / shares shares	Jan. 31, 2024 USD ($)	Jan. 10, 2025 USD ($)	Jul. 31, 2024 USD ($)	Jul. 31, 2023	Jul. 30, 2017
Additional Disclosures
Estimated forfeitures related to unvested stock-based awards				$ 548,000			$ 548,000
Forfeitures related to total unrecognized stock based compensation authorization pending									$ 2,000,000
Dividend Equivalents [Abstract]
Reversal of dividend equivalents				5,000		$ 13,000	32,000	$ 36,000
Carrying value at period end				$ 519,536,000			$ 519,536,000			$ 426,105,000
Performance shares, RSUs, Restricted stock and share units
Awards (In Shares)
Outstanding, Beginning Balance (in shares) | shares				2,621,963	1,800,288		1,800,288
Granted (in shares) | shares				489,191	1,154,859
Settled (in shares) | shares				(578,751)	(204,292)
Canceled/Forfeited (in shares) | shares				(643,012)	(128,892)
Outstanding, Ending Balance (in shares) | shares				1,889,391	2,621,963		1,889,391
Vested, Ending Balance (in shares) | shares				125,904			125,904
Vested and Expected to Vest, Ending Balance (in shares) | shares				1,811,411			1,811,411
Weighted Average Grant Date Fair Value
Outstanding, Beginning Balance (in dollars per share) | $ / shares				$ 8.11	$ 10.61		$ 10.61
Granted (in dollars per share) | $ / shares				3.63	5.04
Settled (in dollars per share) | $ / shares				9.41	11.26
Canceled/Forfeited (in dollars per share) | $ / shares				5.48	10.61
Outstanding, Ending Balance (in dollars per share) | $ / shares				6.61	$ 8.11		6.61
Vested, Ending Balance (in dollars per share) | $ / shares				13.09			13.09
Vested and Expected to Vest, Ending Balance (in dollars per share) | $ / shares				$ 6.60			$ 6.60
Aggregate Intrinsic Value
Outstanding, Ending Balance				$ 3,779,000			$ 3,779,000
Vested, Ending Balance							252,000
Vested and Expected to Vest, Ending Balance				3,623,000			3,623,000
Additional Disclosures
Total intrinsic value relating to fully vested stock-based awards converted during the period				1,632,000		4,789,000	$ 2,268,000	7,445,000
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				5,000			$ 32,000
Reversal of dividend equivalents						(13,000)		(36,000)
Paid during the period				117,000		$ 151,000	156,000	$ 265,000
Carrying value at period end				$ 128,000			$ 128,000			$ 316,000