Stock-Based Compensation Narrative (Details) - USD ($) $ in Millions	3 Months Ended
Oct. 31, 2025	Oct. 31, 2024
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award
Granted, number of shares	52,000
2006 Plan
Share-based Compensation Arrangement by Share-based Payment Award
Number Authorized (shares)	3,439,000
Number Available (shares)	1,085,482
2006 Plan \| Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award
Share-based Compensation Expense	$ 1.1	$ 0.9
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	51,700	40,800
2006 Plan \| Class B \| Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award
Granted, number of shares	0	0

Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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Number of shares authorized for issuance under share-based payment arrangement.

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The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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