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Federal Income Taxes
3 Months Ended
Mar. 31, 2023
Income Tax Disclosure [Abstract]  
Federal Income Taxes Federal Income TaxesThe reconciliation of the provision for federal income taxes and the amount computed at the federal statutory tax rate of 21% of income before federal income tax expense is as follows for the:
Three Months Ended 
 March 31
20232022
Income taxes at statutory rate$1,345 $1,190 
Effect of nontaxable income
Interest income on tax exempt municipal securities(148)(134)
Earnings on corporate owned life insurance policies(47)(55)
Other(7)(4)
Total effect of nontaxable income(202)(193)
Effect of nondeductible expenses11 
Effect of tax credits(68)(73)
Federal income tax expense$1,084 $935