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Note 10 - Loan and Credit Agreements - Summary of Term Debt (Details) (Parentheticals) - USD ($) | 9 Months Ended | 12 Months Ended
--- | --- | ---
Aug. 31, 2021 | Nov. 30, 2020
Term Loan Due October 2037 [Member] |  |
Debt Instrument, Periodic Payment, Total | $ 17,271 | $ 17,271
Debt Instrument, Interest Rate, Stated Percentage | 5.00% | 5.00%
SBA Loan One [Member] |  |
Debt Instrument, Periodic Payment, Total | $ 731 | $ 731
Debt Instrument, Interest Rate, Stated Percentage | 3.75% | 3.75%
SBA Loan Two [Member] |  |
Debt Instrument, Periodic Payment, Total | $ 731 | $ 731
Debt Instrument, Interest Rate, Stated Percentage | 3.75% | 3.75%
SBA Loan Three [Member] |  |
Debt Instrument, Periodic Payment, Total | $ 731 | $ 731
Debt Instrument, Interest Rate, Stated Percentage | 3.75% | 3.75%

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