|
Stock-Based Compensation (Summary Of Options Awarded Weighted-Average Assumptions) (Details) (USD $)
|
12 Months Ended | ||
|---|---|---|---|
|
Dec. 31, 2014
|
Dec. 31, 2013
|
Dec. 31, 2012
|
|
| Stock-Based Compensation [Abstract] | |||
| Fair value | $ 5.42 | $ 6.55 | $ 4.74 |
| Expected life (in years) | 5 years 6 months | 5 years 6 months | 7 years 5 months 5 days |
| Risk-free interest rate | 1.56% | 1.44% | 1.10% |
| Expected volatility | 36.01% | 46.43% | 43.84% |
| Expected dividend yield | 2.33% | 2.67% | 3.19% |