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Federal Income Taxes (Reconciliation of the provision for federal income taxes) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Tax Disclosure [Abstract]
Income taxes at 34% statutory rate	$ 4,903	$ 2,493	$ 3,025
Interest income on tax exempt municipal securities	(643)	(802)	(990)
Earnings on corporate owned life insurance policies	(225)	(346)	(160)
Other	312	288	283
Total effect of nontaxable income	(556)	(860)	(867)
Effect of nondeductible expenses	46	68	108
Effect of tax credits	(617)	(830)	(984)
Unrecognized Deferred Tax Benefit on Joint Venture Investment	72	116	98
Federal income tax expense	$ 3,848	$ 987	$ 1,380

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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