Federal Home Loan Bank and Short-term Borrowings (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020
Short-term Debt [Line Items]
Federal home loan bank shares owned	10,598
Percentage of investment to be maintained on total assets	0.05%
Amount of dollar cap on total assets	$ 16.2
Additional percentage of investment to be maintained on total advances	3.75%
Percentage of credit available on total assets	25.00%
Amount of credit available on total assets	$ 108.2
Short term debt average outstanding amount	19.8	$ 24.3
Long-term federal home loan bank advances	10.0
Federal home loan bank, advance, maturity, year one	10.0
Average long-term borrowings	2.1	$ 0.0
Repayments of interest made on long term borrowings	$ 0.0
Convertible Advances Maturing In October 31, 2022 \| Federal Home Loan Bank of Atlanta [Member]
Short-term Debt [Line Items]
Debt instrument, interest rate, stated percentage	0.20%
Debt instrument, maturity date	Oct. 31, 2022
Convertible debt	$ 10.0
Convertible Advances Maturing In August 24, 2023 \| Federal Home Loan Bank of Atlanta [Member]
Short-term Debt [Line Items]
Debt instrument, interest rate, stated percentage	0.26%
Debt instrument, maturity date	Aug. 24, 2023
Convertible debt	$ 5.0
Convertible Advances Maturing In July 27, 2023 \| Federal Home Loan Bank of Atlanta [Member]
Short-term Debt [Line Items]
Debt instrument, interest rate, stated percentage	0.28%
Debt instrument, maturity date	Jul. 27, 2023
Convertible debt	$ 5.0
Financial Bank Two [Member]
Short-term Debt [Line Items]
Line of credit facility, maximum borrowing capacity	8.0
Financial Bank One [Member]
Short-term Debt [Line Items]
Line of credit facility, maximum borrowing capacity	$ 9.0
Maximum
Short-term Debt [Line Items]
Short-term debt weighted average interest rate	2.34%
Minimum
Short-term Debt [Line Items]
Short-term debt weighted average interest rate		1.94%

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Federal Home Loan Bank Shares Owned.

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