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PROPERTY, PLANT AND EQUIPMENT (Tables)
 9 Months Ended
Sep. 30, 2017
PROPERTY, PLANT AND EQUIPMENT [Abstract]  
Property, plant and equipment
Property, plant and equipment consist of the following:

 
 
September 30,
  
December 31,
 
 
 
2017
  
2016
 
Land
 
$
2,256
  
$
2,234
 
Buildings and improvements
  
30,867
   
30,061
 
Machinery and equipment
  
117,523
   
113,780
 
Construction in progress
  
1,593
   
3,029
 
 
  
152,239
   
149,104
 
Accumulated depreciation
  
(108,575
)
  
(100,349
)
Property, plant and equipment, net
 
$
43,664
  
$
48,755