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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
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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