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Note 6 - Other Assets - Other Assets (Details) - USD ($)
Mar. 31, 2023
Dec. 31, 2022
Investment in marketable securities $ 942,530 $ 797,749
Total other assets 19,444,514 23,968,241
Other Assets [Member]    
Deferred rent receivable 1,799,025 1,641,831
Investment in marketable securities 942,530 797,749
Prepaid expenses, deposits and other 449,226 619,621
Notes receivable 316,374 316,374
Accounts receivable, net 48,180 67,780
Right-of-use assets, net 38,428 45,843
Other intangibles, net 7,483 22,483
Total other assets $ 3,601,246 $ 3,511,681