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Inventories
9 Months Ended
Sep. 30, 2014
Inventories [Abstract]  
Inventories
6.Inventories

The components of inventory were as follows (in thousands):
 
 
September 30,
2014
  
December 31,
2013
 
Raw materials and supplies
 
$
133,473
  
$
127,525
 
Work in process
  
33,915
   
30,498
 
Finished products
  
91,054
   
90,352
 
Inventory reserves
  
(45,002
)
  
(43,452
)
 
 
$
213,440
  
$
204,923