Earnings Per Common Share (Summary Of Computation Of Basic And Diluted Earnings Per Common Share) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Earnings Per Share [Abstract]
Income available to common shareholders	$ 39,369	$ 31,584	$ 74,573	$ 65,317
Denominator for basic earnings per share (weighted average common shares outstanding)	16,149,523	16,165,119	16,133,183	16,203,736
Effect of dilutive options and warrants	90,094	75,481	82,159	78,957
Denominator for diluted earnings per share (weighted average common shares outstanding adjusted for the effect of dilutive options and warrants)	16,239,617	16,240,600	16,215,342	16,282,693
Basic earnings per common share	$ 2.44	$ 1.95	$ 4.62	$ 4.03
Diluted earnings per common share	$ 2.42	$ 1.94	$ 4.60	$ 4.01