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Income Taxes, Reconciliation of Federal Statutory Rate to Actual Effective Rate (Details)
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Reconciliation of federal statutory rate to actual effective rate [Abstract]    
Federal statutory income tax rate 21.00% 21.00%
Increase (decrease) in tax rate due to [Abstract]    
State franchise tax, net of federal benefit 8.20% 8.30%
Reduction for tax exempt interest (1.70%) (1.60%)
Cash surrender value of life insurance (1.00%) (0.50%)
Other 0.20% (0.20%)
Effective income tax rate 26.70% 27.00%