XML 47 R28.htm IDEA: XBRL DOCUMENT v2.4.0.8
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, 2013
Jun. 30, 2012
Dec. 31, 2012
Stock-Based Compensation [Abstract]      
Options, Outstanding, beginning of year 225,670    
Options, Granted 1,100    
Options, Exercised (7,433)    
Options, Forfeited (6,175)    
Options, Outstanding, end of year 213,162   225,670
Options, Exercisable, end of year 182,362    
Weighted Average Exercise Price Per Share, Outstanding, beginning of year $ 26.39    
Weighted Average Exercise Price Per Share, Granted $ 27.56    
Weighted Average Exercise Price Per Share, Exercised $ 24.15    
Weighted Average Exercise Price Per Share, Forfeited $ 29.94    
Weighted Average Exercise Price Per Share, Outstanding, end of year $ 26.38   $ 26.39
Weighted Average Exercise Price Per Share, Exercisable, end of year $ 26.26    
Weighted Average Remaining Contractual Term, Outstanding, 5 years 9 months 18 days   6 years 1 month 6 days
Weighted Average Remaining Contractual Term, Granted in Period 9 years 6 months    
Weighted Average Remaining Contractual Term, Exercised During Period 2 years 1 month 6 days    
Weighted Average Remaining Contractual Term, Forfeited During Period 4 years 9 months 18 days    
Weighted Average Remaining Contractual Term, Outstanding, 5 years 9 months 18 days   6 years 1 month 6 days
Weighted Average Remaining Contractual Term, Exercisable at End of Period 5 years 1 month 6 days    
Aggregate Intrinsic Value, Outstanding, $ 256    
Aggregate Intrinsic Value, Outstanding, end of year 560   256
Aggregate Intrinsic Value, Exercisable, end of year 500    
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period 12 months    
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized 80    
Share Price $ 29.00 $ 25.91 $ 27.05
Proceeds from Stock Options Exercised 180 99  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value $ 560   $ 256