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INVESTMENT IN UNCONSOLIDATED JOINT VENTURES (Hamilton Bay Apts and Sales) (Details) - USD ($)
Jun. 30, 2021
Dec. 31, 2020
INVESTMENT IN UNCONSOLIDATED JOINT VENTURES    
Investments in joint venture $ 1,416,958 $ 1,410,769
Outstanding amount of mortgage $ 282,438,864 $ 283,444,533
Mortgages payable | Minimum    
INVESTMENT IN UNCONSOLIDATED JOINT VENTURES    
Interest rate (as a percent) 3.53%  
Mortgages payable | Maximum    
INVESTMENT IN UNCONSOLIDATED JOINT VENTURES    
Interest rate (as a percent) 5.66%