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Note 7 - Long-term Debt and Notes Payable (Details Textual) - USD ($) |  | 3 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jul. 24, 2020 | Jul. 31, 2021 | Oct. 31, 2021 | Oct. 31, 2020
Long-Term Debt, Maturity, Year One |  |  | $ 324,840 |
Long-Term Debt, Maturity, Year Two |  |  | 3,803,998 |
Long-Term Debt, Maturity, Year Three |  |  | 4,190,521 |
Paycheck Protection Program CARES Act [Member] |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  |  |  | 1.00%
Proceeds from Issuance of Unsecured Debt |  |  |  | $ 4,981,400
Interest Payable |  | $ 60,323 |  |
Gain (Loss) on Extinguishment of Debt, Including Interest |  | 5,041,723 |  |
Extinguishment of Debt, Amount |  | $ 4,981,400 |  |
Pinnacle Financial Partners [Member] | Revolving Credit Facility [Member] |  |  |  |
Long-term Line of Credit, Total |  |  | 3,500,000 | 5,000,000.0
Line of Credit Facility, Remaining Borrowing Capacity |  |  | $ 4,400,000 | $ 1,600,000
Pinnacle Financial Partners [Member] | Virginia Real Estate Loan and North Carolina Real Estate Loan [Member] |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  |  | 3.95% |
North Mill Capital LLC [Member] | Revolving Credit Facility [Member] |  |  |  |
Line of Credit Facility, Percent of Eligible Accounts | 85.00% |  |  |
Line of Credit Facility, Percent of Eligible Inventory | 35.00% |  |  |
Line of Credit Facility, Additional Capacity for Advances | $ 5,000,000 |  |  |
Line of Credit Facility, Restricted Capacity for Advances | 1,500,000 |  |  |
Line of Credit Facility, Maximum Borrowing Capacity | $ 18,000,000 |  |  |
Debt Instrument, Interest Rate, Effective Percentage | 4.75% |  | 4.75% |
Debt Instrument, Term (Year) | 3 years |  |  |
Debt Instrument, Term Extensions (Year) | 1 year |  |  |
North Mill Capital LLC [Member] | Revolving Credit Facility [Member] | Maximum [Member] |  |  |  |
Debt Instrument, Interest Rate, Effective Percentage | 6.00% |  |  |
North Mill Capital LLC [Member] | Revolving Credit Facility [Member] | Prime Rate [Member] |  |  |  |
Debt Instrument, Basis Spread on Variable Rate | 1.50% |  | 1.50% |

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- Definition Potential extension to the period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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