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REAL ESTATE ACTIVITY (Details) - USD ($)
$ in Thousands
Mar. 31, 2018
Dec. 31, 2017
Mar. 31, 2017
Real Estate [Abstract]      
Apartments $ 718,373    
Apartments under construction 124,272    
Commercial properties 201,436    
Land held for development 68,202    
Real estate subject to sales contract 44,854    
Total real estate, at cost, less impairment 1,157,137    
Less accumulated depreciation (178,007)    
Total real estate $ 979,130 $ 988,117 $ 911,724