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Summary Of Significant Accounting Policies (Schedule Of Earnings Per Share Basic And Diluted) (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Summary Of Significant Accounting Policies [Abstract]    
Weighted average shares outstanding (basic) 4,374 4,421
Impact of common stock equivalents 7 24
Weighted average shares outstanding (diluted) 4,381 4,445
Anti-dilutive options excluded from calculation   29
Net income $ 13,598 $ 14,938
Basic earnings per share $ 3.11 $ 3.38
Diluted earnings per share $ 3.10 $ 3.36