Federal Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Income Tax Disclosure [Abstract]
Federal statutory tax rate	21.00%	21.00%	21.00%	21.00%
Income taxes at 34% statutory rate	$ 997	$ 994	$ 1,683	$ 1,801
Interest income on tax exempt municipal securities	(191)	(236)	(394)	(480)
Earnings on corporate owned life insurance policies	(113)	(43)	(261)	(79)
Other	(4)	(4)	(8)	(8)
Total effect of nontaxable income	(308)	(283)	(663)	(567)
Effect of nondeductible expenses	3	7	7	13
Effective Income Tax Rate Reconciliation, Tax Credit, Amount	134	177	266	357
Federal income tax expense	$ 558	$ 541	$ 761	$ 890

Effective Income Tax Rate Reconciliation, Tax Exempt Income And Tax Credits, Amount

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Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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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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Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to nondeductible expenses.

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