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Note 12 - Income Taxes (Details Textual) - USD ($) | 12 Months Ended |
--- | --- | ---
Oct. 31, 2022 | Oct. 31, 2021 | Oct. 31, 2020 | Oct. 31, 2009
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent | 21.00% | 21.00% | 21.00% |
Deferred Tax Assets, Gross, Total | $ 4,386,184 | $ 4,317,025 |  |
Deferred Tax Assets, Operating Loss Carryforwards, Total | 3,156,960 | 3,114,714 |  |
Deferred Tax Assets, Operating Loss Carryforwards, Domestic | 13,205,414 |  |  |
Deferred Tax Assets, Operating Loss Carryforwards, State and Local | 2,298,744 |  |  |
Deferred Tax Assets, Valuation Allowance | 4,386,184 | 4,280,823 |  |
Unrecognized Tax Benefits, Interest on Income Taxes Accrued | 2,448 | 7,815 |  |
Unrecognized Tax Benefits, Income Tax Penalties Accrued | 0 | 5,113 |  |
Income Tax Examination, Penalties and Interest Accrued, Total | 16,055 | 13,607 |  |
Unrecognized Tax Benefits that Would Impact Effective Tax Rate | 20,630 | $ 21,144 |  |
Decrease in Unrecognized Tax Benefits is Reasonably Possible | 3,000 |  |  |
AOS Acquisition [Member] |  |  |  |
Deferred Tax Assets, Gross, Total |  |  |  | $ 1,517,605
Deferred Tax Assets, Operating Loss Carryforwards, Total | $ 896,000 |  |  | $ 4,455,525

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