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Share-Based Compensation (Tables)
12 Months Ended
Dec. 31, 2017
Share-Based Compensation [Abstract]  
Summary Of Stock Option Activity
          Weighted    
        Weighted Average    
        Average Remaining   Aggregate
  Number of     Exercise Contractual   Intrinsic
  Options     Price Term   Value
Outstanding at beginning of year 49,099   $ 19.00      
Granted -     -      
Exercised (21,320 )   19.45      
Forfeited -     -      
Expired (5,580 )   19.64      
Outstanding and exercisable at end of period 22,199   $ 18.40 0.4 years $ 282
Summary Of Restricted Stock Award Activity
        Weighted
        Average
        Market
  Number of     Price at
  Shares     Grant Date
Outstanding at beginning of year 114,565   $ 19.90
Granted 52,627     31.26
Vested (25,247 )   23.90
Forfeited (11,359 )   12.81
Outstanding at end of period 130,586   $ 24.32
Share-Based Compensation Expense Included In Consolidated Statements Of Income
    2017   2016    2015 
Salaries and employee benefits $ 927 $ 601 $ 431
Other noninterest expense   247   244   243
Total share-based compensation expense $ 1,174 $ 845 $ 674