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FAIR VALUE MEASUREMENTS (Details) (USD $)
Sep. 30, 2012
Dec. 31, 2011
Mortgage Notes Payable    
Carrying Amount $ 138,335,670 $ 139,161,612
Partnership Properties
   
Mortgage Notes Payable    
Carrying Amount 138,335,689 139,161,612
Estimated Fair Value 158,058,689 158,050,039
Investment Properties
   
Mortgage Notes Payable    
Carrying Amount 138,735,174  
Estimated Fair Value $ 160,344,245