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Federal Income Taxes (Components of the consolidated provision for federal income taxes) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Income Tax Disclosure [Abstract]      
Currently payable $ 2,657 $ 4,593 $ 4,371
Deferred (benefit) expense 1,008 13 (523)
Income tax expense $ 3,665 $ 4,606 $ 3,848