v2.4.0.8
Stock-Based Compensation (Summary Of Stock Option Activity) (Details) (Stock Options [Member], USD $)
In Thousands, except Per Share data, unless otherwise specified
 6 Months Ended
Jun. 30, 2013
Stock Options [Member]
  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Options, Balance, December 31, 2012 2,199
Options, Granted 117
Options, Exercised (22)
Options, Cancelled (66)
Options, Balance, June 30, 2013 2,228
Options, Vested and expected to vest at June 30, 2013 2,153
Options, Exercisable, June 30, 2013 1,674
Options, Weighted Average Exercise Price, Balance, December 31, 2012 $ 38.55
Options, Weighted Average Exercise Price, Granted $ 31.67
Options, Weighted Average Exercise Price, Exercised $ 21.56
Options, Weighted Average Exercise Price, Cancelled $ 35.19
Options, Weighted Average Exercise Price, Balance, June 30, 2013 $ 38.45
Options, Weighted Average Exercise Price, Vested and expected to vest at June 30, 2013 $ 38.56
Options, Weighted Average Exercise Price, Exercisable, June 30, 2013 $ 39.14
Options, Weighted Average Remaining Contractual Term (in years), Balance, June 30, 2013 5 years 4 months 17 days
Options, Weighted Average Remaining Contractual Term (in years), Vested and expected to vest, June 30, 2013 5 years 3 months 4 days
Options, Weighted Average Remaining Contractual Term (in years), Exercisable, June 30, 2013 4 years 3 months 22 days
Options, Aggregate Intrinsic Value, Balance, June 30, 2013 $ 10,969
Options, Aggregate Intrinsic Value, Vested and expected to vest at June 30, 2013 10,641
Options, Aggregate Intrinsic Value, Exercisable, June 30, 2013 $ 8,772