Annual report pursuant to Section 13 and 15(d)

NATURE OF OPERATIONS AND SIGNIFICANT ACCOUNTING POLICIES (Property, Plant and Equipment) (Details)

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NATURE OF OPERATIONS AND SIGNIFICANT ACCOUNTING POLICIES (Property, Plant and Equipment) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Property, Plant and Equipment    
Investment in information systems $ 131,779 $ 128,778
Buildings | Minimum    
Property, Plant and Equipment    
Estimated useful lives 20 years  
Buildings | Maximum    
Property, Plant and Equipment    
Estimated useful lives 50 years  
Building improvements | Minimum    
Property, Plant and Equipment    
Estimated useful lives 7 years  
Building improvements | Maximum    
Property, Plant and Equipment    
Estimated useful lives 10 years  
Machinery and equipment    
Property, Plant and Equipment    
Investment in information systems $ 25,691 25,160
Machinery and equipment | Minimum    
Property, Plant and Equipment    
Estimated useful lives 2 years  
Machinery and equipment | Maximum    
Property, Plant and Equipment    
Estimated useful lives 10 years  
Computer software and hardware    
Property, Plant and Equipment    
Investment in information systems $ 52,400 51,632
Computer software and hardware | Minimum    
Property, Plant and Equipment    
Estimated useful lives 3 years  
Computer software and hardware | Maximum    
Property, Plant and Equipment    
Estimated useful lives 10 years  
Furniture and fixtures    
Property, Plant and Equipment    
Investment in information systems $ 20,245 $ 20,385
Furniture and fixtures | Minimum    
Property, Plant and Equipment    
Estimated useful lives 2 years  
Furniture and fixtures | Maximum    
Property, Plant and Equipment    
Estimated useful lives 5 years