Investment Securities - Securities in Continuous Unrealized Loss Position (Details) - USD ($)	Sep. 30, 2022	Dec. 31, 2021
Schedule Of Investments [Line Items]
Available-for-sale, less than 12 months, fair value	$ 77,157,000	$ 82,923,000
Available-for-sale, less than 12 months, unrealized losses	(4,764,000)	(731,000)
Available-for-sale, 12 months or more, fair value	55,248,000	3,417,000
Available-for-sale, 12 months or more, unrealized losses	(6,241,000)	(39,000)
Held-to-maturity, less than 12 months, fair value	2,013,000
Held-to-maturity, less than 12 months, unrealized losses	(96,000)	0
Residential Mortgage Backed Securities [Member]
Schedule Of Investments [Line Items]
Available-for-sale, less than 12 months, fair value	26,903,000	31,346,000
Available-for-sale, less than 12 months, unrealized losses	(1,478,000)	(240,000)
Available-for-sale, 12 months or more, fair value	19,875,000	253,000
Available-for-sale, 12 months or more, unrealized losses	(2,323,000)	(2,000)
Commercial Mortgage Backed Securities [Member]
Schedule Of Investments [Line Items]
Available-for-sale, less than 12 months, fair value	8,105,000	2,245,000
Available-for-sale, less than 12 months, unrealized losses	(364,000)	(12,000)
Available-for-sale, 12 months or more, fair value	535,000	2,970,000
Available-for-sale, 12 months or more, unrealized losses	(54,000)	(35,000)
Held-to-maturity, less than 12 months, fair value	1,297,000
Held-to-maturity, less than 12 months, unrealized losses	(37,000)
US Government Agencies Debt Securities [Member]
Schedule Of Investments [Line Items]
Available-for-sale, less than 12 months, fair value	4,223,000	4,987,000
Available-for-sale, less than 12 months, unrealized losses	(777,000)	(13,000)
Available-for-sale, 12 months or more, fair value	117,000	194,000
Available-for-sale, 12 months or more, unrealized losses	(1,000)	(2,000)
Held-to-maturity, less than 12 months, fair value	629,000
Held-to-maturity, less than 12 months, unrealized losses	(46,000)
US States and Political Subdivisions Debt Securities [Member]
Schedule Of Investments [Line Items]
Available-for-sale, less than 12 months, fair value	3,151,000	561,000
Available-for-sale, less than 12 months, unrealized losses	(72,000)	(10,000)
Available-for-sale, 12 months or more, fair value	512,000
Available-for-sale, 12 months or more, unrealized losses	(55,000)
Held-to-maturity, less than 12 months, fair value	87,000
Held-to-maturity, less than 12 months, unrealized losses	(13,000)
Corporate Notes [Member]
Schedule Of Investments [Line Items]
Available-for-sale, less than 12 months, fair value	13,452,000	9,092,000
Available-for-sale, less than 12 months, unrealized losses	(1,387,000)	(52,000)
Available-for-sale, 12 months or more, fair value	2,707,000
Available-for-sale, 12 months or more, unrealized losses	(293,000)
US Treasury Securities [Member]
Schedule Of Investments [Line Items]
Available-for-sale, less than 12 months, fair value	21,323,000	34,692,000
Available-for-sale, less than 12 months, unrealized losses	(686,000)	$ (404,000)
Available-for-sale, 12 months or more, fair value	31,502,000
Available-for-sale, 12 months or more, unrealized losses	$ (3,515,000)

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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