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ACCOUNTING POLICIES - PPE (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Property, Plant and Equipment [Line Items]    
Intangible Assets, Net (Including Goodwill) $ 1,800,000 $ 1,900,000
Property, buildings and equipment, net $ 160,878 $ 156,445
Leasehold Improvements    
Property, Plant and Equipment [Line Items]    
Property, Plant and Equipment, Estimated Useful Lives five to forty years  
Furniture and Fixtures [Member]    
Property, Plant and Equipment [Line Items]    
Property, Plant and Equipment, Estimated Useful Lives three to ten years  
Software and Software Development Costs [Member]    
Property, Plant and Equipment [Line Items]    
Property, Plant and Equipment, Estimated Useful Lives three to five years  
Land, Buildings and Improvements    
Property, Plant and Equipment [Line Items]    
Property, buildings and equipment, net $ 88,300