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Investment Securities - Narrative (Details)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2024 USD ($) security	Sep. 30, 2023 USD ($)	Sep. 30, 2024 USD ($) security	Sep. 30, 2023 USD ($)	Dec. 31, 2023 USD ($) security
Schedule of Available-for-sale Securities
12 months or more, number of securities | security	441		441		420
Gross gains (losses) from sales of held to maturity			$ 0		$ 0
Debt securities held to maturity, allowance for credit loss	$ 236,000		$ 236,000		238,000
Federal and state income tax rate			23.30%
Proceeds from sale of FHLB stock			$ 26,900,000
Purchase of FRB stock			17,200,000
Unrealized gain	12,000		81,000
Unrealized loss		$ 58,000		$ 175,000
Debt securities available for sale, allowance for credit loss	$ 0		$ 0		$ 0
Bank-issued trust preferred securities
Schedule of Available-for-sale Securities
12 months or more, number of securities | security	2		2		3
U.S. government sponsored agencies
Schedule of Available-for-sale Securities
12 months or more, number of securities | security	13		13		15
Loss in event of default			$ 0
Debt securities held to maturity, allowance for credit loss	$ 0		0		$ 0
Investment Securities
Schedule of Available-for-sale Securities
Interest receivable	$ 10,200,000		$ 10,200,000		$ 9,500,000

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