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Subsequent Events	12 Months Ended
Subsequent Events	Dec. 31, 2011
Subsequent Events [Abstract]
Subsequent Events	NOTE P—SUBSEQUENT EVENTS *Acquisition of GHK Holdings Limited (GHK)* In February 2011, the Company completed the acquisition of GHK Holdings Limited (GHK). With its headquarters in London, GHK is a multi-disciplinary consultancy serving government and commercial clients on environment, employment, health, education and training, transportation, social policy, business and economic development, and international development issues.