Employee Benefit Plans (Restricted Shares Activity And Related Information) (Details) - Restricted Stock - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Restricted Awards Activity
Beginning Balance (in shares)	135,558	140,606
Granted (in shares)	23,301	17,728
Vested (in shares)	(26,943)	(25,451)
Ending Balance (in shares)	131,916	132,883
Average Market Price at Grant
Outstanding at period start (in dollars per share)	$ 79.19	$ 73.87
Granted (in dollars per share)	99.60	95.64
Vested (in dollars per share)	75.55	74.57
Outstanding at period end (in dollars per share)	$ 81.83	$ 75.48
Stock-based compensation expense associated with restricted shares	$ 748	$ 708
Unrecognized stock-based compensation expense associated with restricted shares	$ 5,600
Weighted average period (in years) in which the above amount is expected to be recognized	2 years 11 months 15 days