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Options and Awards Intrinsic Values (Details) (Stock Options, USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Stock Options
     
Outstanding $ 15,703 $ 18,942 $ 25,366
Vested 11,285 12,960 14,545
Expected to Vest 4,088 5,374 9,630
Exercised $ 7,123 $ 5,651 $ 1,955