Note 8 - Assets Held for Lease (Details Textual) - USD ($)	3 Months Ended		6 Months Ended
	May 31, 2023	May 31, 2022	May 31, 2023	May 31, 2022
Operating Lease, Lease Income, Total				$ 0
Property Plant and Equipment, Lessor Asset Under Operating Lease, Next Rolling 12 Months	$ 37,606		$ 37,606
Gain (Loss) on Sale of Leased Assets, Net, Operating Leases	114,156	$ 0	114,156	$ 0
Sales [Member]
Operating Lease, Lease Income, Total	$ 32,000	$ 0	$ 64,000