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Investment Securities - Available-for-Sale and Held-to-Maturity (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Schedule Of Investments [Line Items]
Available-for-sale, amortized cost	$ 130,676	$ 83,289
Available-for-sale, gross unrealized gains	977	1,855
Available-for-sale, gross unrealized losses	(770)	(151)
Investment securities available-for-sale, at fair value	130,883	84,993
Held-to-maturity, amortized cost	3,436	6,429
Held-to-maturity, gross unrealized gains	41	130
Held-to-maturity, estimated fair value	3,477	6,559
Residential Mortgage Backed Securities [Member]
Schedule Of Investments [Line Items]
Available-for-sale, amortized cost	46,020	24,680
Available-for-sale, gross unrealized gains	450	865
Available-for-sale, gross unrealized losses	(242)	(8)
Investment securities available-for-sale, at fair value	46,228	25,537
Commercial Mortgage Backed Securities [Member]
Schedule Of Investments [Line Items]
Available-for-sale, amortized cost	24,647	40,849
Available-for-sale, gross unrealized gains	371	780
Available-for-sale, gross unrealized losses	(47)	(142)
Investment securities available-for-sale, at fair value	24,971	41,487
Held-to-maturity, amortized cost	2,115	4,302
Held-to-maturity, gross unrealized gains	29	75
Held-to-maturity, estimated fair value	2,144	4,377
US Government Agencies Debt Securities [Member]
Schedule Of Investments [Line Items]
Available-for-sale, amortized cost	5,207
Available-for-sale, gross unrealized losses	(15)
Investment securities available-for-sale, at fair value	5,192
Held-to-maturity, amortized cost	768	1,120
Held-to-maturity, gross unrealized gains	10	34
Held-to-maturity, estimated fair value	778	1,154
US States and Political Subdivisions Debt Securities [Member]
Schedule Of Investments [Line Items]
Available-for-sale, amortized cost	4,247	4,971
Available-for-sale, gross unrealized gains	80	137
Available-for-sale, gross unrealized losses	(10)
Investment securities available-for-sale, at fair value	4,317	5,108
Held-to-maturity, amortized cost	553	1,007
Held-to-maturity, gross unrealized gains	2	21
Held-to-maturity, estimated fair value	555	1,028
Corporate Note Securities [Member]
Schedule Of Investments [Line Items]
Available-for-sale, amortized cost	15,458	2,711
Available-for-sale, gross unrealized gains	76	73
Available-for-sale, gross unrealized losses	(52)
Investment securities available-for-sale, at fair value	15,482	2,784
US Treasury Securities [Member]
Schedule Of Investments [Line Items]
Available-for-sale, amortized cost	35,097	10,078
Available-for-sale, gross unrealized losses	(404)	(1)
Investment securities available-for-sale, at fair value	$ 34,693	$ 10,077

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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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