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Note 8 - Assets Held for Lease (Details Textual) - USD ($)
3 Months Ended 6 Months Ended
Jun. 14, 2022
May 31, 2022
May 31, 2021
May 31, 2022
May 31, 2021
Subsequent Event [Member]          
Operating Lease, Monthly Lease Income $ 383,904        
Sales [Member]          
Operating Lease, Lease Income, Total   $ 0 $ 0 $ 0 $ 0