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Note 6 - Other Assets - Other Assets (Details) - USD ($)
Dec. 31, 2022
Dec. 31, 2021
Investment in marketable securities $ 797,749 $ 1,514,483
Deferred offering costs 0  
Total other assets 23,968,241 23,131,827
Other Assets [Member]    
Deferred rent receivable 1,641,831 1,660,197
Prepaid expenses, deposits and other 619,621 473,554
Investment in marketable securities 797,749 1,514,483
Accounts receivable, net 67,780 401,927
Right-of-use assets, net 45,843 74,643
Other intangibles, net 22,483 82,483
Notes receivable 316,374 316,374
Deferred offering costs 0 134,843
Total other assets $ 3,511,681 $ 4,658,504