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Earnings Per Share (Schedule Of Weighted Average Number Of Shares) (Details)
12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Weighted Average Number of Shares Outstanding, Diluted [Abstract]      
Weighted average common shares outstanding 30,680,000 30,085,000 29,761,000
Stock options 257,000 495,000 48,000
Unvested restricted stock units 226,000 206,000 115,000
Unvested restricted stock 3,000 8,000 4,000
Unvested SS/L Phantom SARS   93,000 53,000
Common shares outstanding for diluted earnings per share 31,166,000 30,887,000 29,981,000