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INVENTORIES (Tables)
6 Months Ended
Jun. 30, 2015
INVENTORIES [Abstract]  
Summary of Inventories
Inventories consist of the following (in thousands):
 
  
June 30,
2015
  
December 31,
2014
 
Raw materials
 
$
15,561
  
$
12,956
 
Work in process
  
1,690
   
1,779
 
Finished goods
  
545
   
240
 
  
$
17,796
  
$
14,975