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NONCONTROLLING INTERESTS (Details)
$ in Thousands
12 Months Ended
Dec. 31, 2017
USD ($)
property
Joint_Venture
Dec. 31, 2016
USD ($)
Dec. 31, 2015
USD ($)
Noncontrolling Interest [Line Items]      
Increase in additional paid in capital and other comprehensive income $ 0 $ 0 $ 0
Number of consolidated joint ventures | Joint_Venture 9    
Minimum      
Noncontrolling Interest [Line Items]      
Noncontrolling interest ownership 1.20%    
Maximum      
Noncontrolling Interest [Line Items]      
Noncontrolling interest ownership 30.00%    
Noncontrolling Interests Operating Partnership      
Noncontrolling Interest [Line Items]      
Decrease in noncontrolling interest in Operating Partnership $ (3,500)    
Increase in additional paid in capital and other comprehensive income 3,524 $ (8,096) $ 544
Accumulated Other Comprehensive Income (Loss) and Additional Paid-in Capital      
Noncontrolling Interest [Line Items]      
Increase in additional paid in capital and other comprehensive income $ 3,500    
Consolidated Joint Venture | Office building      
Noncontrolling Interest [Line Items]      
Number of real estate properties | property 26    
Consolidated Joint Venture | Warehouse      
Noncontrolling Interest [Line Items]      
Number of real estate properties | property 1    
Consolidated Joint Venture | Other      
Noncontrolling Interest [Line Items]      
Number of real estate properties | property 1