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%