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Business Overview	6 Months Ended
Business Overview	Jun. 30, 2011
Basis of Presentation and Business Overview [Abstract]
Business Overview	2. Business Overview NCI is a provider of information technology (IT), engineering, logistics and professional services and solutions to U.S. Federal Government agencies. The Company’s capabilities are centered on overcoming customers’ challenges to help them meet their critical mission and objectives. NCI provides full lifecycle IT solutions, complemented by professional services through its core capabilities which include: enterprise systems management; network engineering; cybersecurity and information assurance; software development and systems engineering; program management, acquisition, and lifecycle support; engineering and logistics; health IT and informatics; and training and simulation. The Company provides these services to U.S. Defense, Intelligence, and Federal Civilian agencies. The majority of the Company’s revenue was derived from contracts with the U.S. Federal Government, directly as a prime contractor or as a subcontractor. The Company primarily conducts business throughout the United States.