Note 13 - Equity Incentive Plan - Option Activity (Details) - $ / shares	12 Months Ended
	Nov. 30, 2023	Nov. 30, 2022
Options O/S at beginning of period, Shares (in shares)	12,000	22,000
Options O/S at beginning of period, Weighted Average Exercise Price (in dollars per share)	$ 5.75	$ 5.93
Granted, Shares (in shares)	0
Granted, Weighted Average Exercise Price (in dollars per share)	$ 0	$ 0
Exercised, Shares (in shares)	0	0
Exercised, Weighted Average Exercise Price (in dollars per share)	$ 0	$ 0
Options Expired or Forfeited, Shares (in shares)	(4,000)	(10,000)
Options Expired or Forfeited, Weighted Average Exercise Price (in dollars per share)	$ 6.4	$ 6.15
Options O/S at end of Period, Shares (in shares)	8,000	12,000
Options O/S at end of period, Weighted Average Exercise Price (in dollars per share)	$ 5.43	$ 5.75
Options Outstanding at the End of the Period, Weighted Average Remaining Contractual Term (Year)	10 months 24 days	1 year 4 months 24 days
Options Exer. At end of the Period, Shares (in shares)	8,000	12,000
Options Exer. At end of the Period, Weighted Average Exercise Price (in dollars per share)	$ 5.43	$ 5.75
Options Exer. At end of the Period, Weighted Average Remaining Contractual Term (Year)	10 months 24 days	1 year 4 months 24 days