Note 14 - Equity Incentive Plan and Stock Based Compensation - Summary of Stock-based Compensation Expense (Details) - USD ($)	3 Months Ended	9 Months Ended
Aug. 31, 2021	Aug. 31, 2020	Aug. 31, 2021	Aug. 31, 2020
Stock-based compensation expense	$ 61,446	$ 42,910	$ 203,245	$ 195,662
Treasury share repurchase expense	0	0	(30,471)	(26,536)
Stock-based compensation expense net of treasury repurchases	$ 61,446	$ 42,910	$ 172,774	$ 169,126

Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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