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Stock-Based Compensation Narrative (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jan. 31, 2026	Jan. 31, 2025	Jan. 31, 2026	Jan. 31, 2025
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award
Granted, number of shares			62,000
2006 Plan
Share-based Compensation Arrangement by Share-based Payment Award
Number Authorized (shares)	3,439,000		3,439,000
Number Available (shares)	1,080,263		1,080,263
2006 Plan \| Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award
Share-based Compensation Expense	$ 1.0	$ 1.1	$ 2.1	$ 1.9
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			62,500	82,550
2006 Plan \| Class B \| Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award
Granted, number of shares			0	0