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Inventory
12 Months Ended
Dec. 31, 2011
Inventory [Abstract]  
Inventory
8.      Inventory:

A summary of inventory at December 31, 2011 and 2010 is as follows (in thousands):

   
2011
   
2010
 
             
Finished goods
  $ 233,542     $ 39,963  
Work in process
    49,514       12,441  
Raw materials, supplies and other
    71,522       5,876  
    $ 354,578     $ 58,280