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RELATED PARTY TRANSACTIONS (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Mar. 31, 2018
Mar. 31, 2017
Dec. 31, 2018
Jul. 01, 2017
Jul. 01, 2016
Related Party Transaction [Line Items]          
Total rental income $ 76,201 $ 70,040      
Investment in WBW CHP LLC (in percent) 47.70%        
WBW CHP LLC          
Related Party Transaction [Line Items]          
Amount recovered for reimbursements of operating expense for related party $ 300 $ 300      
ICW Inc | Board of Directors Chairman          
Related Party Transaction [Line Items]          
Prepaid Insurance       $ 200 $ 200
EDisability, LLC | Board of Directors Chairman          
Related Party Transaction [Line Items]          
Lease term 5 years        
Scenario, Forecast | EDisability, LLC | Board of Directors Chairman          
Related Party Transaction [Line Items]          
Total rental income     $ 200