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FAIR VALUE MEASUREMENTS (Details) - USD ($)
Jun. 30, 2020
Dec. 31, 2019
Mortgage Notes Payable    
Carrying Amount $ 284,402,031 $ 281,771,246
Estimated Fair Value 305,678,933 290,892,652
Partially owned properties    
Mortgage Notes Payable    
Carrying Amount 166,357,134 166,404,255
Estimated Fair Value $ 179,496,478 $ 169,988,236