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INVENTORIES
3 Months Ended
Mar. 31, 2015
INVENTORIES  
INVENTORIES
8.
INVENTORIES
 
Inventories consist of the following:
 
(in thousands)
 
March 31,
2015
   
December 31, 2014
 
Raw materials and supplies
  $ 17,117     $ 16,996  
Work in process
    7,741       6,602  
Finished goods
    5,554       5,221  
Total inventories
  $ 30,412     $ 28,819