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Computation Of Basic And Diluted Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Earnings Per Share [Abstract]
Net income	$ 1,181	$ 6,185
Weighted average common shares outstanding - Basic	1,897	1,896
Incremental shares outstanding assuming the exercise of dilutive stock options and SARs (share settled)	0	7
Weighted average common shares outstanding - Diluted	1,897	1,903
Basic Earnings per Common Share	$ 0.62	$ 3.26
Diluted Earnings per Common Share	$ 0.62	$ 3.25

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