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REAL ESTATE (Details Narrative)
1 Months Ended 12 Months Ended
Nov. 30, 2015
USD ($)
a
Dec. 31, 2015
USD ($)
a
Number
ft²
Dec. 31, 2013
USD ($)
Dec. 31, 2014
USD ($)
Number of income-producing apartment purchase | Number   48    
Number of units | ft²   7,983    
Area of land | a   3,665    
Impairment of real estate     $ 200,000  
Real estate carrying value   $ 935,635,000   $ 781,794,000
Commercial Properties [Member]        
Impairment of real estate     9,600,000  
Land [Member]        
Impairment of real estate     1,500,000  
Related Party [Member]        
Number of income-producing apartment purchase | Number   7    
Number of units | Number   1,155    
Payment to acquire the properties   $ 30,400,000    
Area of land | a   91    
TEXAS        
Area of land | a   579    
Proceeds from sale of real estate   $ 102,900,000    
Gain on sale of real estate   $ 18,900,000    
TEXAS | Related Party [Member]        
Number of income-producing apartment purchase | Number   2    
TENNESSEE | Related Party [Member]        
Number of income-producing apartment purchase | Number   1    
FLORIDA | Related Party [Member]        
Number of income-producing apartment purchase | Number   2    
MISSISSIPPI | Related Party [Member]        
Number of income-producing apartment purchase | Number   1    
KANSAS [Member] | Related Party [Member]        
Number of income-producing apartment purchase | Number   1    
TEXAS [Member]        
Area of land | a 88      
Proceeds from sale of real estate $ 33,900,000      
Gain on sale of real estate $ 12,100,000      
OHIO [Member]        
Number of income-producing apartment purchase | Number   1    
Number of units | Number   200    
Gain on sale of real estate   $ 700,000    
Commercial [Member]        
Impairment of real estate   5,300,000 9,600,000  
Real estate carrying value   $ 8,300,000 35,794,331  
Land [Member]        
Impairment of real estate     1,506,300  
Real estate carrying value     $ 2,355,768  
Apartments [Member]        
Number of income-producing apartment purchase | Number   5    
Number of units | Number   990    
Payment to acquire the properties   $ 82,900,000    
Apartments [Member] | TEXAS        
Number of income-producing apartment purchase | Number   3    
Apartments [Member] | TENNESSEE        
Number of income-producing apartment purchase | Number   1    
Apartments [Member] | ALABAMA        
Number of income-producing apartment purchase | Number   1    
Office Building [Member] | TEXAS        
Payment to acquire the properties   $ 16,800,000    
Area of real estate property | a   92,723