Note 14 - Equity Incentive Plan and Stock Based Compensation - Summary of Shares Issued (Details) - USD ($)	3 Months Ended		6 Months Ended
	May 31, 2022	May 31, 2021	May 31, 2022	May 31, 2021
Shares issued (in shares)			101,167	103,500
Stock-based compensation expense	$ 88,413	$ 79,745	$ 157,265	$ 141,799
Treasury share repurchase expense	$ 57,527	$ 12,175	$ 92,432	30,471
Shares issued (in shares)	104,500	98,500	8,333
Director [Member] | Vesting Immediately [Member]
Shares issued (in shares)	10,000	10,000
Stock-based compensation expense			$ 15,000	$ 15,000
Employees, Directors, and Consultants [Member] | Awards with Three-year Vesting [Member]
Shares issued (in shares)	94,500	88,500
Treasury share repurchase expense			$ 94,500