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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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