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Export Sales and Major Customers (Tables)
12 Months Ended
Dec. 31, 2011
Export Sales and Major Customers [Abstract]  
Revenues by Geographic Area
Orbital’s revenues by geographic area, as determined by customer location, were as follows (in thousands):

   
Years Ended December 31,
 
   
2011
  
2010
  
2009
 
United States
 $1,035,090  $1,084,131  $1,020,722 
Europe
  146,623   102,106   72,955 
Mexico and South America
  131,240   93,855    
East Asia and Australia
  32,970   14,485   31,618 
Total
 $1,345,923  $1,294,577  $1,125,295