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Stock Based Compensation (Schedule Of Stock Option Pricing Assumptions) (Details) (USD $)
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Stock Based Compensation [Abstract]      
Expected life 6 years 10 years 10 years
Interest rate 0.97% 2.71% 3.40%
Volatility 27.89% 27.10% 32.77%
Dividend yield 10.78% 7.23% 7.00%
Weighted-average fair value per share at grant date $ 0.50 $ 1.37 $ 2.16