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Investment Securities - Securities in Continuous Unrealized Loss Position (Details) - USD ($)	Mar. 31, 2022	Dec. 31, 2021
Schedule Of Investments [Line Items]
Available-for-sale, less than 12 months, fair value	$ 106,638,000	$ 82,923,000
Available-for-sale, less than 12 months, unrealized losses	(4,832,000)	(731,000)
Available-for-sale, 12 months or more, fair value	3,272,000	3,417,000
Available-for-sale, 12 months or more, unrealized losses	(6,000)	(39,000)
Held-to-maturity, less than 12 months, fair value	2,159,000
Held-to-maturity, less than 12 months, unrealized losses	(32,000)	0
Residential Mortgage Backed Securities [Member]
Schedule Of Investments [Line Items]
Available-for-sale, less than 12 months, fair value	35,249,000	31,346,000
Available-for-sale, less than 12 months, unrealized losses	(1,617,000)	(240,000)
Available-for-sale, 12 months or more, fair value	230,000	253,000
Available-for-sale, 12 months or more, unrealized losses	(3,000)	(2,000)
Commercial Mortgage Backed Securities [Member]
Schedule Of Investments [Line Items]
Available-for-sale, less than 12 months, fair value	8,724,000	2,245,000
Available-for-sale, less than 12 months, unrealized losses	(146,000)	(12,000)
Available-for-sale, 12 months or more, fair value	2,897,000	2,970,000
Available-for-sale, 12 months or more, unrealized losses	(2,000)	(35,000)
Held-to-maturity, less than 12 months, fair value	1,285,000
Held-to-maturity, less than 12 months, unrealized losses	(9,000)
US Government Agencies Debt Securities [Member]
Schedule Of Investments [Line Items]
Available-for-sale, less than 12 months, fair value	4,645,000	4,987,000
Available-for-sale, less than 12 months, unrealized losses	(356,000)	(13,000)
Available-for-sale, 12 months or more, fair value	145,000	194,000
Available-for-sale, 12 months or more, unrealized losses	(1,000)	(2,000)
Held-to-maturity, less than 12 months, fair value	739,000
Held-to-maturity, less than 12 months, unrealized losses	(19,000)
US States and Political Subdivisions Debt Securities [Member]
Schedule Of Investments [Line Items]
Available-for-sale, less than 12 months, fair value	2,705,000	561,000
Available-for-sale, less than 12 months, unrealized losses	(66,000)	(10,000)
Held-to-maturity, less than 12 months, fair value	135,000
Held-to-maturity, less than 12 months, unrealized losses	(4,000)
Corporate Notes [Member]
Schedule Of Investments [Line Items]
Available-for-sale, less than 12 months, fair value	15,394,000	9,092,000
Available-for-sale, less than 12 months, unrealized losses	(526,000)	(52,000)
US Treasury Securities [Member]
Schedule Of Investments [Line Items]
Available-for-sale, less than 12 months, fair value	39,921,000	34,692,000
Available-for-sale, less than 12 months, unrealized losses	$ (2,121,000)	$ (404,000)

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Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for more than 12 months, without allowance for credit loss. Includes beneficial interest in securitized financial asset.

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