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Share-Based Compensation Plans (Summary Of Stock Option Activity) (Details) - USD ($)
$ / shares in Units, $ in Thousands
6 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Exercised, Number of Options    
Stock Options [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Outstanding at beginning of year, Number of Options 135,416  
Exercised, Number of Options (8,722)  
Expired, Number of Options (12,645)  
Outstanding and exercisable at end of period, Number of Options 114,049  
Outstanding at beginning of year, Weighted Average Exercise Price $ 19.25  
Exercised, Weighted Average Exercise Price 18.96  
Expired, Weighted Average Exercise Price 20.15  
Outstanding and exercisable at end of period, Weighted Average Exercise Price $ 19.17  
Outstanding and exercisable at end of period, Weighted Average Remaining Contractual Term 1 year 8 months 12 days  
Outstanding and exercisable at end of period, Aggregate Intrinsic Value $ 646