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INVENTORIES (Tables)
 6 Months Ended
Jun. 30, 2017
INVENTORIES [Abstract]  
Components of inventories
The components of inventories are as follows:

 
 
June 30,
  
December 31,
 
 
 
2017
  
2016
 
Raw materials
 
$
43,827
  
$
43,376
 
Work in progress
  
20,278
   
18,008
 
Finished goods
  
38,887
   
37,487
 
Inventories
 
$
102,992
  
$
98,871