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Inventories (Tables)
12 Months Ended
Dec. 31, 2011
Inventories - (Tables) [Abstract]  
Inventories Table
   
2011
 
2010
 
Raw materials and supplies
 
$
119,550
 
$
113,415
 
Work in process
   
31,085
   
26,358
 
Finished products
   
89,334
   
71,302
 
Inventory reserves
   
(35,211
)
 
(32,516
)
   
$
204,758
 
$
178,559