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Property, Plant and Equipment (Tables)
12 Months Ended
Dec. 31, 2018
Property, Plant and Equipment [Abstract]  
Schedule of property, plant and equipment, at cost
  December 31, 
  2018  2017 
Land $26,652  $68,562 
Buildings and leasehold improvements  203,920   205,534 
Machinery and equipment  448,276   466,325 
   678,848   740,421 
Less: Accumulated depreciation  (391,177)  (367,954)
Total property, plant and equipment, net $287,671  $372,467