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Investment Securities - Available-for-Sale and Held-to-Maturity (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Schedule Of Investments [Line Items]
Available-for-sale, amortized cost	$ 139,514	$ 130,676
Available-for-sale, gross unrealized gains	342	977
Available-for-sale, gross unrealized losses	(4,838)	(770)
Investment securities available-for-sale, at fair value	135,018	130,883
Held-to-maturity, amortized cost	2,718	3,436
Held-to-maturity, gross unrealized gains		41
Held-to-maturity, gross unrealized losses	(32)
Held-to-maturity, estimated fair value	2,686	3,477
Residential Mortgage Backed Securities [Member]
Schedule Of Investments [Line Items]
Available-for-sale, amortized cost	46,121	46,020
Available-for-sale, gross unrealized gains	81	450
Available-for-sale, gross unrealized losses	(1,620)	(242)
Investment securities available-for-sale, at fair value	44,582	46,228
Commercial Mortgage Backed Securities [Member]
Schedule Of Investments [Line Items]
Available-for-sale, amortized cost	22,089	24,647
Available-for-sale, gross unrealized gains	195	371
Available-for-sale, gross unrealized losses	(148)	(47)
Investment securities available-for-sale, at fair value	22,136	24,971
Held-to-maturity, amortized cost	1,821	2,115
Held-to-maturity, gross unrealized gains		29
Held-to-maturity, gross unrealized losses	(9)
Held-to-maturity, estimated fair value	1,812	2,144
US Government Agencies Debt Securities [Member]
Schedule Of Investments [Line Items]
Available-for-sale, amortized cost	5,158	5,207
Available-for-sale, gross unrealized losses	(357)	(15)
Investment securities available-for-sale, at fair value	4,801	5,192
Held-to-maturity, amortized cost	758	768
Held-to-maturity, gross unrealized gains		10
Held-to-maturity, gross unrealized losses	(19)
Held-to-maturity, estimated fair value	739	778
US States and Political Subdivisions Debt Securities [Member]
Schedule Of Investments [Line Items]
Available-for-sale, amortized cost	4,228	4,247
Available-for-sale, gross unrealized gains	20	80
Available-for-sale, gross unrealized losses	(66)	(10)
Investment securities available-for-sale, at fair value	4,182	4,317
Held-to-maturity, amortized cost	139	553
Held-to-maturity, gross unrealized gains		2
Held-to-maturity, gross unrealized losses	(4)
Held-to-maturity, estimated fair value	135	555
Corporate Notes [Member]
Schedule Of Investments [Line Items]
Available-for-sale, amortized cost	19,875	15,458
Available-for-sale, gross unrealized gains	46	76
Available-for-sale, gross unrealized losses	(526)	(52)
Investment securities available-for-sale, at fair value	19,395	15,482
US Treasury Securities [Member]
Schedule Of Investments [Line Items]
Available-for-sale, amortized cost	42,043	35,097
Available-for-sale, gross unrealized losses	(2,121)	(404)
Investment securities available-for-sale, at fair value	$ 39,922	$ 34,693

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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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