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INVENTORIES
6 Months Ended
Jun. 30, 2011
INVENTORIES
9.
INVENTORIES
 
Inventories consist of the following:
 
(in thousands)
 
June 30,
2011
   
December 31, 2010
 
Raw materials and supplies
  $ 15,348     $ 15,572  
Work in process
    4,052       4,725  
Finished goods
    1,634       1,585  
Total inventories
  $ 21,034     $ 21,882