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Note 8 - Leases (Details Textual) | 12 Months Ended
--- | ---
Oct. 31, 2021 USD ($) ft² | Oct. 31, 2020 USD ($) | Oct. 31, 2019 USD ($)
Operating Lease, Expense | $ 407,235 | $ 396,066 | $ 403,097
Operating Lease, Weighted Average Remaining Lease Term (Month) | 35 months 3 days |  |
Operating Lease, Weighted Average Discount Rate, Percent | 5.00% |  |
Operating Lease, Payments | $ 407,338 | 382,812 |
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability | 208,390 | 1,462,817 |
Finance Lease, Interest Expense | 2,439 |  |
Finance Lease, Right-of-Use Asset, Amortization | $ 6,145 |  |
Lessee, Finance Lease, Remaining Lease Term (Month) | 58 months |  |
Lessee, Finance Lease, Discount Rate | 4.75% |  |
Finance Lease, Principal Payments | $ 5,777 | (0) | $ (0)
Right-of-Use Asset Obtained in Exchange for Finance Lease Liability | 206,482 |  |
Other Assets [Member] |  |  |
Operating Lease, Right-of-Use Asset | 1,028,639 |  |
Other Noncurrent Liabilities [Member] |  |  |
Operating Lease, Right-of-Use Asset |  | 1,265,194 |
Operating Lease, Liability, Noncurrent | 729,753 |  |
Accounts Payable and Accrued Liabilities [Member] |  |  |
Operating Lease, Liability, Current | 385,463 | 332,329 |
Other Liabilities [Member] |  |  |
Operating Lease, Liability, Noncurrent |  | $ 946,653 |
Finance Lease, Right-of-Use Asset, after Accumulated Amortization, Total | 200,337 |  |
Finance Lease, Liability, Noncurrent | 166,634 |  |
Accounts Payable and Accrued Liabilities, Current [Member] |  |  |
Finance Lease, Liability, Current | $ 34,071 |  |
Operating Lease for Office, Manufacturing and Warehouse Space in Plano, Texas [Member] |  |  |
Area of Real Estate Property (Square Foot) | ft² | 34,000 |  |
Operating Lease for Warehouse Space in Roanoke, Virginia [Member] |  |  |
Area of Real Estate Property (Square Foot) | ft² | 36,000 |  |
Operating Lease For Office Equipment [Member] |  |  |
Lessee, Operating Lease, Term of Contract (Month) | 60 months |  |

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