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Investment Securities - Available-for-Sale and Held-to-Maturity (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Schedule Of Investments [Line Items]
Available-for-sale, amortized cost	$ 138,513	$ 141,883
Available-for-sale, gross unrealized gains	7	8
Available-for-sale, gross unrealized losses	(11,513)	(11,096)
Investment securities available-for-sale, at fair value	127,007	130,795
Held-to-maturity, amortized cost	1,682	1,862
Held-to-maturity, gross unrealized losses	(83)	(93)
Held-to-maturity, estimated fair value	1,599	1,769
Residential Mortgage Backed Securities [Member]
Schedule Of Investments [Line Items]
Available-for-sale, amortized cost	45,498	47,659
Available-for-sale, gross unrealized gains	2	2
Available-for-sale, gross unrealized losses	(3,546)	(3,704)
Investment securities available-for-sale, at fair value	41,954	43,957
Commercial Mortgage Backed Securities [Member]
Schedule Of Investments [Line Items]
Available-for-sale, amortized cost	11,476	12,169
Available-for-sale, gross unrealized gains	5	4
Available-for-sale, gross unrealized losses	(499)	(480)
Investment securities available-for-sale, at fair value	10,982	11,693
Held-to-maturity, amortized cost	1,003	1,167
Held-to-maturity, gross unrealized losses	(31)	(41)
Held-to-maturity, estimated fair value	972	1,126
US Government Agencies Debt Securities [Member]
Schedule Of Investments [Line Items]
Available-for-sale, amortized cost	5,114	5,116
Available-for-sale, gross unrealized losses	(739)	(846)
Investment securities available-for-sale, at fair value	4,375	4,270
Held-to-maturity, amortized cost	601	610
Held-to-maturity, gross unrealized losses	(42)	(40)
Held-to-maturity, estimated fair value	559	570
US States and Political Subdivisions Debt Securities [Member]
Schedule Of Investments [Line Items]
Available-for-sale, amortized cost	1,655	2,166
Available-for-sale, gross unrealized losses	(81)	(94)
Investment securities available-for-sale, at fair value	1,574	2,072
Held-to-maturity, amortized cost	78	85
Held-to-maturity, gross unrealized losses	(10)	(12)
Held-to-maturity, estimated fair value	68	73
Corporate Notes [Member]
Schedule Of Investments [Line Items]
Available-for-sale, amortized cost	17,803	17,817
Available-for-sale, gross unrealized gains		2
Available-for-sale, gross unrealized losses	(3,149)	(1,898)
Investment securities available-for-sale, at fair value	14,654	15,921
US Treasury Securities [Member]
Schedule Of Investments [Line Items]
Available-for-sale, amortized cost	56,967	56,956
Available-for-sale, gross unrealized losses	(3,499)	(4,074)
Investment securities available-for-sale, at fair value	$ 53,468	$ 52,882

X

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Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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