The estimated future forfeitures related to total unrecognized stock-based compensation cost.

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

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Amount, after tax, of expense for award under share-based payment arrangement.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

Amount of cost not yet recognized for nonvested award under share-based payment arrangement.

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Amount of tax benefit for recognition of expense of award under share-based payment arrangement.

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- Definition

Discount rate from fair value on purchase date that participants pay for shares.

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- Definition

Number of options outstanding, including both vested and non-vested options.

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Stock-Based Compensation - Expenses (Details) - USD ($)	12 Months Ended
Stock-Based Compensation - Expenses (Details) - USD ($)	Jul. 31, 2026	Jul. 31, 2025	Jul. 31, 2024
Stock-based Compensation Expenses
Stock-based compensation expense (benefit) before income tax benefit	$ 3,121,000	$ 2,238,000
Estimated income tax benefit	0	0
Net stock-based compensation expense	3,121,000	$ 2,238,000
Total remaining unrecognized compensation cost related to the unvested stock-based awards	5,143,000
Estimated forfeitures related to unvested stock-based awards	$ 249,000
Weighted average number of years net compensation cost is expected to be recognized over	1 year 8 months 12 days
Number of stock-based awards outstanding at period end (in shares)	91,250	124,470	141,190
Stock options
Stock-based Compensation Expenses
Stock-based compensation expense (benefit) before income tax benefit	$ 0	$ 19,000
Performance shares
Stock-based Compensation Expenses
Stock-based compensation expense (benefit) before income tax benefit	461,000	(44,000)
RSUs, restricted stock and share units
Stock-based Compensation Expenses
Stock-based compensation expense (benefit) before income tax benefit	2,638,000	2,232,000
ESPP
Stock-based Compensation Expenses
Stock-based compensation expense (benefit) before income tax benefit	$ 22,000	$ 31,000
Discount offered to employees participating in the ESPP as a percentage of market price	15.00%
2000 Stock Incentive Plan \| Stock appreciation rights (SARs)
Stock-based Compensation Expenses
Number of stock-based awards outstanding at period end (in shares)	0	0
2000 Stock Incentive Plan \| Stock options
Stock-based Compensation Expenses
Number of stock-based awards outstanding at period end (in shares)	91,250
Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs, by Report Line [Axis]: us-gaap:CostOfRevenue
Stock-based Compensation Expenses
Stock-based compensation expense (benefit) before income tax benefit	$ 141,000	$ 243,000
Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs, by Report Line [Axis]: us-gaap:ResearchAndDevelopmentExpense
Stock-based Compensation Expenses
Stock-based compensation expense (benefit) before income tax benefit	15,000	77,000
Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs, by Report Line [Axis]: us-gaap:SellingGeneralAndAdministrativeExpense
Stock-based Compensation Expenses
Stock-based compensation expense (benefit) before income tax benefit	$ 2,965,000	$ 1,918,000