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Stock-Based Compensation (Summary of Options Outstanding) (Details) (USD $)
 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]      
Shares, Outstanding, beginning of year 20,000 22,000 22,000
Shares, Exercised (3,872) 0 0
Shares, Forfeited (6,128) (2,000)  
Shares, Outstanding, end of year 10,000 20,000 22,000
Shares, Exercisable, end of year 10,000 20,000 22,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract]      
Weighted Average Exercise Price, Outstanding, beginning of year (in USD per share) $ 21.59 $ 21.59 $ 21.59
Weighted Average Exercise Price, Exercised (in USD per share) $ 21.63    
Weighted Average Exercise Price, Forfeited (in USD per share) $ 21.63 $ 21.59  
Weighted Average Exercise Price, Outstanding, end of year (in USD per share) $ 21.55 $ 21.59 $ 21.59
Weighted Average Exercise Price, Exercisable, end of year (in USD per share) $ 21.55 $ 21.59 $ 21.59
Aggregate Intrinsic Value, end of year $ 9,500