Export Sales and Major Customers

12 Months Ended

Dec. 31, 2011

Export Sales and Major Customers [Abstract]

Export Sales and Major Customers

4.  Export Sales and Major Customers

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

Approximately 71%, 74% and 78% of the company’s revenues in 2011, 2010 and 2009, respectively, were generated under contracts with the U.S. Government and its agencies or under subcontracts with the U.S. Government’s prime contractors.  All such revenues were recorded in the launch vehicles, satellites and space systems or advanced space programs segments.