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Note 1 - Organization (Details Textual)
 9 Months Ended
Jul. 12, 2021
$ / shares
shares
Jun. 17, 2021
USD ($)
shares
Jun. 17, 2021
USD ($)
shares
Jun. 15, 2021
USD ($)
$ / shares
shares
Jul. 29, 2020
Sep. 30, 2022
USD ($)
$ / shares
shares
Sep. 30, 2021
USD ($)
Jan. 24, 2022
$ / shares
shares
Jan. 21, 2022
$ / shares
shares
Aug. 31, 2021
$ / shares
shares
Apr. 27, 2021
USD ($)
Jan. 23, 2012
$ / shares
Number of Limited Liability Companies           2            
Number of Limited Partnerships in which Company is Sole General Partner           5            
Equity Offering, Maximum Gross Proceeds | $                     $ 200,000,000  
Shares Issued, Price Per Share (in dollars per share) | $ / shares                       $ 19.00
Proceeds from Issuance of Preferred Stock and Preference Stock | $           $ 0 $ 20,489,803          
Long-Term Debt, Maturity, Remainder of Fiscal Year | $           2,539,623            
Mortgage Notes [Member]                        
Long-Term Debt, Maturity, Remainder of Fiscal Year | $           $ 2,500,000            
Class A Common Stock and Accompanying Common Stock Warrants [Member]                        
Shares Issued, Price Per Share (in dollars per share) | $ / shares $ 5.00                      
Class A Common Stock and Accompanying Pre-funded Warrants [Member]                        
Shares Issued, Price Per Share (in dollars per share) | $ / shares $ 4.99                      
Common Stock Warrants [Member]                        
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares) 2,000,000                      
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares $ 5.50                 $ 5.50    
Warrants and Rights Outstanding, Term (Year) 5 years                 5 years    
Pre-funded Warrants [Member]                        
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares) 1,000,000                      
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares $ 0.01                 $ 0.01    
Placement Agent Warrants [Member]                        
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)                   80,000    
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares                   $ 6.25    
Warrants and Rights Outstanding, Term (Year)                   5 years    
Class of Warrant or Right, Securities Called By Warrants or Rights, Percentage of Class of Stock                   4.00%    
Common Stock Warrants and Placement Agent Warrants [Member]                        
Class of Warrant or Right, Exercised During Period (in shares)           0            
Class of Warrant or Right, Number of Securities Called by Each Warrant or Right (in shares)                 0.10      
Series A Warrants [Member]                        
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares           $ 7.00   $ 0.17 $ 7.00      
Warrants and Rights Outstanding, Term (Year)                 5 years      
Class of Warrant or Right, Number of Securities Called by Each Warrant or Right (in shares)                 1      
Class of Warrant or Right, Outstanding (in shares)               14,450,069        
Common Class A [Member]                        
Stock Issued During Period, Shares, New Issues (in shares) 1,000,000                      
Series D Preferred Stock [Member]                        
Stock Issued During Period, Shares, New Issues (in shares)   920,000 920,000 800,000                
Shares Issued, Price Per Share (in dollars per share) | $ / shares       $ 25.00                
Preferred Stock, Dividend Rate, Percentage       9.375%   9.375%            
Proceeds from Issuance of Preferred Stock and Preference Stock | $   $ 20,500,000 $ 20,500,000 $ 18,100,000                
Series D Preferred Stock [Member] | Over-Allotment Option [Member]                        
Stock Issued During Period, Shares, New Issues (in shares)   120,000                    
Proceeds from Issuance of Preferred Stock and Preference Stock | $   $ 2,700,000                    
Option to Purchase Additional Shares, Period (Day)       45 days                
Reverse Stock Split [Member]                        
Stockholders' Equity Note, Stock Split, Conversion Ratio         2              
Model Home Properties [Member]                        
Number of Limited Partnerships in which Company is Sole General Partner           5            
Commercial Property [Member]                        
Number of Real Estate Properties, Fee Simple           12            
Commercial Property [Member] | Partially Owned Properties [Member]                        
Number of Real Estate Properties, Fee Simple           2            
Mortgage Notes [Member] | Mortgage Notes [Member]                        
Long-Term Debt, Maturity, Remainder of Fiscal Year | $           $ 2,200,000            
Mortgage Note, Due June 11, 2022 [Member] | The 300 N.P [Member]                        
Debt Instrument, Periodic Payment Terms, Balloon Payment to be Paid | $           $ 2,200,000