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Stock-Based Compensation Plans (Summary Of Stock Options Outstanding) (Details) (USD $)
In Thousands, except Per Share data, unless otherwise specified |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
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Jun. 30, 2013
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Jun. 30, 2012
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Jun. 30, 2013
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Jun. 30, 2012
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||||
| Restricted stock awards granted | 80 | 84 | 303 | 168 |
| Restricted stock awards granted, weighted average exercise price | $ 47.09 | $ 26.45 | $ 39.52 | $ 24.43 |
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2004 Incentive Stock Plan [Member]
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||||
| Restricted stock awards granted | 68 | 73 | 291 | 157 |
| Restricted stock awards granted, weighted average exercise price | $ 46.84 | $ 26.31 | $ 39.14 | $ 24.22 |
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2004 Restricted Stock Plan For Non Employee Directors [Member]
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||||
| Restricted stock awards granted | 12 | 11 | 12 | 11 |
| Restricted stock awards granted, weighted average exercise price | $ 48.43 | $ 27.42 | $ 48.43 | $ 27.42 |