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Inventories
6 Months Ended
Jun. 30, 2011
Inventories [Abstract]  
Inventories
Note 4 — Inventories
     Inventories as of June 30, 2011 and December 31, 2010 were as follows:
                 
    June 30,     December 31,  
    2011     2010  
Raw materials
  $ 6,337     $ 8,125  
Work-in-process
    2,034       3,927  
Finished goods
    7,778       6,735  
Ferrous scrap metal
    25,326       24,093  
Non-ferrous scrap metal
    34,831       30,574  
 
           
 
  $ 76,306     $ 73,454