XML 61 R51.htm IDEA: XBRL DOCUMENT v3.19.2
FAIR VALUE MEASUREMENTS (Details) - USD ($)
Jun. 30, 2019
Dec. 31, 2018
Mortgage Notes Payable    
Carrying Amount $ 252,012,154 $ 252,370,843
Estimated Fair Value 261,059,469 233,362,501
Partially owned properties    
Mortgage Notes Payable    
Carrying Amount 166,449,428 166,492,692
Estimated Fair Value $ 168,510,767 $ 160,956,055