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PROPERTY, PLANT AND EQUIPMENT (Tables)
9 Months Ended
Sep. 30, 2016
PROPERTY, PLANT AND EQUIPMENT [Abstract]  
Property, plant and equipment
Property, plant and equipment at September 30, 2016 and December 31, 2015 are summarized as follows:

  
September 30,
2016
  
December 31, 2015
 
Land
 
$
4,282
  
$
3,247
 
Building
  
45,677
   
33,051
 
Equipment
  
175,679
   
153,682
 
Construction in progress
  
16,978
   
39,525
 
   
242,616
   
229,505
 
Less: accumulated depreciation
  
75,936
   
70,990
 
Property, plant and equipment, net
 
$
166,680
  
$
158,515