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Investment Securities - Schedule of Amortized Cost and Estimated Fair Value of Investment Securities Available-for-Sale by Contractual Maturity (Details) - USD ($) $ in Thousands | Mar. 31, 2022 | Dec. 31, 2021
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Schedule Of Available For Sale Securities [Line Items] |  |
Investment securities available-for-sale, Amortized Cost | $ 49,940 | $ 49,037
Investment securities available-for-sale, Estimated Fair Value | 45,911 | 48,557
U.S. Treasury Securities |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Investment securities available-for-sale, within 1 year, Amortized Cost | 0 |
Investment securities available-for-sale, Greater than 1 to 5 years, Amortized Cost | 0 |
Investment securities available-for-sale, Greater than 5 to 10 years, Amortized Cost | 5,078 |
Investment securities available-for-sale, Greater than 10 years, Amortized Cost | 0 |
Investment securities available-for-sale, Amortized Cost | 5,078 | 5,068
Investment securities available-for-sale, within 1 year, Estimated Fair Value | 0 |
Investment securities available-for-sale, Greater than 1 to 5 years, Estimated Fair Value | 0 |
Investment securities available-for-sale, Greater than 5 to 10 years, Estimated Fair Value | 4,677 |
Investment securities available-for-sale, Greater than10 years, Estimated Fair Value | 0 |
Investment securities available-for-sale, Estimated Fair Value | 4,677 | 5,050
Municipal Securities - Tax Exempt |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Investment securities available-for-sale, within 1 year, Amortized Cost | 0 |
Investment securities available-for-sale, Greater than 1 to 5 years, Amortized Cost | 0 |
Investment securities available-for-sale, Greater than 5 to 10 years, Amortized Cost | 0 |
Investment securities available-for-sale, Greater than 10 years, Amortized Cost | 538 |
Investment securities available-for-sale, Amortized Cost | 538 | 540
Investment securities available-for-sale, within 1 year, Estimated Fair Value | 0 |
Investment securities available-for-sale, Greater than 1 to 5 years, Estimated Fair Value | 0 |
Investment securities available-for-sale, Greater than 5 to 10 years, Estimated Fair Value | 0 |
Investment securities available-for-sale, Greater than10 years, Estimated Fair Value | 488 |
Investment securities available-for-sale, Estimated Fair Value | 488 | 536
Municipal Securities - Taxable |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Investment securities available-for-sale, within 1 year, Amortized Cost | 0 |
Investment securities available-for-sale, Greater than 1 to 5 years, Amortized Cost | 0 |
Investment securities available-for-sale, Greater than 5 to 10 years, Amortized Cost | 796 |
Investment securities available-for-sale, Greater than 10 years, Amortized Cost | 1,250 |
Investment securities available-for-sale, Amortized Cost | 2,046 | 796
Investment securities available-for-sale, within 1 year, Estimated Fair Value | 0 |
Investment securities available-for-sale, Greater than 1 to 5 years, Estimated Fair Value | 0 |
Investment securities available-for-sale, Greater than 5 to 10 years, Estimated Fair Value | 724 |
Investment securities available-for-sale, Greater than10 years, Estimated Fair Value | 1,156 |
Investment securities available-for-sale, Estimated Fair Value | 1,880 | 790
Government Agency Securities |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Investment securities available-for-sale, within 1 year, Amortized Cost | 0 |
Investment securities available-for-sale, Greater than 1 to 5 years, Amortized Cost | 0 |
Investment securities available-for-sale, Greater than 5 to 10 years, Amortized Cost | 0 |
Investment securities available-for-sale, Greater than 10 years, Amortized Cost | 11,837 |
Investment securities available-for-sale, within 1 year, Estimated Fair Value | 0 |
Investment securities available-for-sale, Greater than 1 to 5 years, Estimated Fair Value | 0 |
Investment securities available-for-sale, Greater than 5 to 10 years, Estimated Fair Value | 0 |
Investment securities available-for-sale, Greater than10 years, Estimated Fair Value | 10,326 |
Corporate Securities |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Investment securities available-for-sale, within 1 year, Amortized Cost | 0 |
Investment securities available-for-sale, Greater than 1 to 5 years, Amortized Cost | 495 |
Investment securities available-for-sale, Greater than 5 to 10 years, Amortized Cost | 8,910 |
Investment securities available-for-sale, Greater than 10 years, Amortized Cost | 500 |
Investment securities available-for-sale, Amortized Cost | 9,905 | 9,425
Investment securities available-for-sale, within 1 year, Estimated Fair Value | 0 |
Investment securities available-for-sale, Greater than 1 to 5 years, Estimated Fair Value | 486 |
Investment securities available-for-sale, Greater than 5 to 10 years, Estimated Fair Value | 8,614 |
Investment securities available-for-sale, Greater than10 years, Estimated Fair Value | 425 |
Investment securities available-for-sale, Estimated Fair Value | 9,525 | 9,300
U.S. Treasury Securities, Municipal Securities - Tax Exempt, Municipal Securities - Taxable, Government Agency Securities, Corporate Securities |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Investment securities available-for-sale, Amortized Cost | 29,404 |
Investment securities available-for-sale, Estimated Fair Value | 26,896 |
Government Agency Mortgage-Backed Securities |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Investment securities available-for-sale, Amortized Cost | 20,536 | 21,371
Investment securities available-for-sale, Estimated Fair Value | $ 19,015 | $ 21,339

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