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Stock-Based Compensation (Summary of Stock Option Activity) (Details) (USD $)
In Thousands, except Share data, unless otherwise specified
 6 Months Ended 12 Months Ended
Jun. 30, 2014
Dec. 31, 2013
Jun. 30, 2013
Stock-Based Compensation [Abstract]      
Options, Outstanding, beginning of year 219,540    
Options, Exercised (550)    
Options, Outstanding, end of year 218,990 219,540  
Options, Exercisable, end of year 191,490    
Weighted Average Exercise Price Per Share, Outstanding, beginning of year $ 26.64    
Weighted Average Exercise Price Per Share, Exercised $ 27.05    
Weighted Average Exercise Price Per Share, Outstanding, end of year $ 26.64 $ 26.64  
Weighted Average Exercise Price Per Share, Exercisable, end of year $ 26.58    
Weighted Average Remaining Contractual Term, Outstanding, 5 years 6 months 6 years 1 month 6 days  
Weighted Average Remaining Contractual Term, Exercised During Period 8 years 6 months    
Weighted Average Remaining Contractual Term, Outstanding, 5 years 6 months 6 years 1 month 6 days  
Weighted Average Remaining Contractual Term, Exercisable at End of Period 4 years 10 months 24 days    
Aggregate Intrinsic Value, Outstanding, $ 147    
Aggregate Intrinsic Value, Exercised in Period 15    
Aggregate Intrinsic Value, Outstanding, end of year 411 147  
Aggregate Intrinsic Value, Exercisable, end of year 370    
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized $ 77    
Share Price $ 28.50 $ 26.90 $ 29.00