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Note 9 - Employee Benefits (Details Textual) - USD ($) | 1 Months Ended | 3 Months Ended | 12 Months Ended
--- | --- | --- | ---
Mar. 31, 2017 | Oct. 31, 2021 | Oct. 31, 2021 | Oct. 31, 2020 | Oct. 31, 2019
Health Insurance Coverage Expense |  |  | $ 2,697,167 | $ 3,165,736 | $ 3,549,189
Defined Contribution Plan, Employer Discretionary Contribution Amount |  |  | $ 65,416 | 66,804 | 68,467
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant (in shares) |  | 2,000 | 2,000 |  |
Share-based Payment Arrangement, Expense |  |  | $ 335,519 | $ 142,242 | $ 980,549
Restricted Stock [Member] |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares) |  |  |  | 0 | 0
Services and Performance Based Shares [Member] |  |  |  |  |
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year) |  |  | 3 years 10 months 24 days |  |
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total |  | $ 1,300,000 | $ 1,300,000 |  |
The 2017 Stock Incentive Plan [Member] |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Number of Additional Shares Authorized (in shares) | 500,000 |  |  |  |
The 2017 Stock Incentive Plan [Member] | Restricted Stock [Member] |  |  |  |  |
Share-based Payment Arrangement, Expense |  |  | $ 108,801 | $ 131,162 | $ 124,838
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares) |  |  | 363,365 |  |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year) |  |  |  | 1 year |
The 2017 Stock Incentive Plan [Member] | Restricted Stock [Member] | Non-employee Directors [Member] |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in shares) |  |  | 30,055 | 58,880 | 30,360
The 2017 Stock Incentive Plan [Member] | Restricted Stock [Member] | Share-based Payment Arrangement, Employee [Member] |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares) |  | 333,310 |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year) |  | 4 years |  |  |

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