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Net Earnings Per Share (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
3 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Net Earnings    
Basic Earnings Per Share $ 3,172 $ 3,452
Diluted Earnings Per Share $ 3,172 $ 3,452
Weighted Average Number Of Shares    
Basic Earnings Per Share (in Shares) 5,475,603 5,497,107
Effect Of Dilutive Securities: Restricted Stock Units - shares 16,967 13,159
Effect Of Dilutive Securities: Shares Held In Deferred Comp Plan By Deferred Compensation Trust 163,680 163,038
Diluted Earnings Per Share (in Shares) 5,656,250 5,673,304
Per Share Amount    
Basic Earnings Per Share $ 0.58 $ 0.63
Diluted Earnings Per Share $ 0.56 $ 0.61