Note 2 - Stock Incentive Plan and Other Share-based Compensation (Details Textual) - USD ($) |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Apr. 30, 2026 |
Apr. 30, 2025 |
Apr. 30, 2026 |
Apr. 30, 2025 |
|
| Restricted Stock [Member] | ||||
| Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeited in Period | 6,685 | |||
| Share-Based Payment Arrangement, Shares Withheld for Tax Withholding Obligation | 31,787 | |||
| Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition | 3 years 1 month 6 days | |||
| Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount | $ 584,000 | $ 584,000 | ||
| Plan 2017 [Member] | ||||
| Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant | 410,000 | 410,000 | ||
| Plan 2017 [Member] | Employees, Consultant and Non-employee Directors [Member] | ||||
| Share-Based Payment Arrangement, Expense | $ 73,670 | $ 71,934 | $ 162,644 | $ 186,298 |