Note 14 - Equity Incentive Plan and Stock Based Compensation - Summary of Shares Issued (Details) - shares	3 Months Ended
	Feb. 28, 2023	Feb. 28, 2022
Shares issued to directors (immediate vesting) (in shares)	87,250	91,167
Unvested shares forfeit upon termination (in shares)	0	(8,333)
Director [Member] | Vesting Immediately [Member]
Shares issued to directors (immediate vesting) (in shares)	5,000	5,000
Employees, Directors, and Consultants [Member] | Awards with Three-year Vesting [Member]
Shares issued to directors (immediate vesting) (in shares)	82,250	94,500