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INVENTORIES (Tables)
9 Months Ended
Sep. 30, 2014
INVENTORIES  
Schedule of inventories
 
                 
(in thousands)
 
September 30,
2014
   
December 31,
2013
 
Raw materials and supplies
  $ 15,479     $ 15,901  
Work in process
    5,638       7,435  
Finished goods
    3,456       5,523  
Total inventories
  $ 24,573     $ 28,859