Annual report pursuant to Section 13 and 15(d)

Stock Incentive Plans (Summary Of Stock Option Activity)

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Stock Incentive Plans (Summary Of Stock Option Activity) (USD $)
12 Months Ended
Dec. 31, 2011
Stock Incentive Plans [Abstract]  
Shares Outstanding as of December 31, 2010 3,138,521
Shares Granted 10,000
Shares Exercised (914,859)
Shares Forfeited (37,100)
Shares Outstanding as of December 31, 2011 2,196,562
Shares Exercisable as of December 31, 2011 2,000,662
Weighted Average Exercise Price Outstanding as of December 31, 2010 $ 20.71
Weighted Average Exercise Price Granted $ 31.39
Weighted Average Exercise Price Exercised $ 20.65
Weighted Average Exercise Price Forfeited $ 23.73
Weighted Average Exercise Price Outstanding as of December 31, 2011 $ 20.75
Weighted Average Exercise Price Exercisable as of December 31, 2011 $ 20.68
Aggregate Intrinsic Value Outstanding as of December 31, 2011 $ 41,393
Aggregate Intrinsic Value Exercisable as of December 31, 2011 $ 37,837
Weighted Average Remaining Contractual Term Outstanding as of December 31, 2011 3.9
Weighted Average Remaining Contractual Term Exercisable as of December 31, 2011 3.6