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Stock Based Compensation (Summary of Stock Option Activity) (Details) - USD ($)
$ / shares in Units, $ in Thousands
 6 Months Ended 12 Months Ended
Jun. 30, 2020
Dec. 31, 2019
Stock Based Compensation [Abstract]    
Options, beginning of year 199,825  
Options, Granted 0  
Options, Exercised (2,005)  
Options, end of year 197,820 199,825
Options, Exercisable, end of period 171,070  
Weighted Average Exercise Price Per Share, Outstanding, beginning of period $ 24.78  
Weighted Average Exercise Price Per Share, Granted  
Weighted Average Exercise Price Per Share, Exercised 19.25  
Weighted Average Exercise Price Per Share, Outstanding, end of period 24.83 $ 24.78
Weighted Average Exercise Price Per Share, Exercisable, end of period $ 23.08  
Weighted Average Remaining Contractual Term, Granted in Period 5 years 9 months 18 days  
Weighted Average Remaining Contractual Term, Outstanding 5 years 4 months 24 days 5 years 10 months 24 days
Weighted Average Remaining Contractual Term, Exercisable at End of Period 4 years 9 months 18 days  
Aggregate Intrinsic Value, Outstanding, beginning of period $ 2,822  
Aggregate Intrinsic Value, Granted in Period 0  
Aggregate Intrinsic Value, Outstanding, end of period 728 $ 2,822
Aggregate Intrinsic Value, Exercisable at end of period $ 728