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Note 6 - Other Assets - Other Assets (Details) - USD ($)
Mar. 31, 2021
Dec. 31, 2020
Total other assets $ 2,846,561 $ 3,422,781
Other Assets [Member]    
Deferred rent receivable 1,876,250 1,912,048
Prepaid expenses, deposits and other 124,169 299,187
Accounts receivable, net 181,949 541,885
Right-of-use assets, net 95,385 102,144
Other intangibles, net 127,483 142,483
Notes receivable 316,374 316,374
Deferred offering costs 124,951 108,660
Total other assets $ 2,846,561 $ 3,422,781