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Earnings Per Common Share (Reconciliation Of Numerators And Denominators ) (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Basic EPS    
Net income available to common shareholders $ 22,285 $ 20,673
Shares (denominator) 29,587,217 29,533,869
Basic EPS $ 0.75 $ 0.70
Effect of Dilutive Securities Income (numerator)
Effect of Dilutive Securities Shares (denominator) 156,178 90,281
Diluted EPS per common share    
Income (numerator) $ 22,285 $ 20,673
Shares (denominator) 29,743,395 29,624,150
Diluted EPS per common share $ 0.75 $ 0.70