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PROPERTY, PLANT AND EQUIPMENT - Schedule of Property, Plant and Equipment (Details) - USD ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Property, Plant and Equipment [Line Items]    
Property, plant and equipment and finance lease right-of-use asset, gross $ 506,515  
Less: accumulated depreciation (285,169)  
Property, plant, and equipment and finance lease right-of-use asset, net 221,346  
Property, plant and equipment, gross   $ 475,158
Less: accumulated depreciation   (268,167)
Property, plant, and equipment, net 221,346 206,991
Land    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment and finance lease right-of-use asset, gross 36,794  
Property, plant and equipment, gross   35,485
Buildings and building improvements    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment and finance lease right-of-use asset, gross 146,210  
Property, plant and equipment, gross   141,098
Machinery and equipment    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment and finance lease right-of-use asset, gross 287,332  
Property, plant and equipment, gross   266,803
Construction in progress    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment and finance lease right-of-use asset, gross $ 36,179  
Property, plant and equipment, gross   $ 31,772