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INVENTORIES (Tables)
12 Months Ended
Dec. 31, 2012
Inventory Disclosure  
Schedule of Inventory
 
             
December 31,
 
2012
   
2011
 
(in thousands)
           
Raw materials
  $ 17,205     $ 15,892  
Work in process
    6,597       5,691  
Finished goods
    4,357       3,324  
Total inventories
  $ 28,159     $ 24,907