Note 14 - Equity Incentive Plan and Stock Based Compensation - Summary of Stock-based Compensation Expense (Details) - USD ($)	3 Months Ended		6 Months Ended
	May 31, 2022	May 31, 2021	May 31, 2022	May 31, 2021
Stock-based compensation expense	$ 88,413	$ 79,745	$ 157,265	$ 141,799
Treasury share repurchase expense	(57,527)	(12,175)	(92,432)	(30,471)
Stock-based compensation expense net of treasury repurchases	$ 30,886	$ 67,570	$ 64,833	$ 111,328
Shares issued (in shares)			101,167	103,500