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Stock-Based Compensation Narrative (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Apr. 30, 2026	Apr. 30, 2025	Apr. 30, 2026	Apr. 30, 2025
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award
Granted, number of shares			73,000
2006 Plan
Share-based Compensation Arrangement by Share-based Payment Award
Number Authorized (shares)	3,439,000		3,439,000
Number Available (shares)	1,074,344		1,074,344
2006 Plan \| Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award
Share-based Compensation Expense	$ 1.0	$ 1.0	$ 3.1	$ 2.9
2006 Plan \| Restricted Stock \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award
Award Vesting Period (years)			1 year
2006 Plan \| Restricted Stock \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award
Award Vesting Period (years)			5 years
2006 Plan \| Common \| Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award
Granted, number of shares			73,400	135,850
2006 Plan \| Class B \| Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award
Granted, number of shares			0	0