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Consolidated Statement of Cash Flows - Additional information (Details) - USD ($)	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Jun. 30, 2023	Jan. 01, 2023	Dec. 31, 2022	Jun. 30, 2022	Dec. 31, 2021
Income tax payments	$ 500,000	$ 950,000
Total interest payments	15,392,000	5,407,000
Non-cash transfers to other real estate owned	0	53,000
Operating lease liabilities	595,000				$ 643,000
Operating lease right-of-use asset	583,000				630,000
Less: Allowance for credit losses	12,313,000	10,672,000	$ 12,221,000	$ 11,947,000	10,743,000	$ 11,568,000	$ 12,398,000
Held to maturity, allowance for credit losses	32,000		$ 109,000	114,000
Allowance for credit losses	937,000			923,000	$ 746,000
Operating lease relating to office location
Operating lease liabilities	147,000	45,000
Operating lease right-of-use asset	147,000	$ 45,000
ASU 2016-13
Less: Allowance for credit losses	1,200,000			1,200,000
Held to maturity, allowance for credit losses	114,000			114,000
Unfunded Loan Commitment | ASU 2016-13
Allowance for credit losses	$ 177,000			$ 177,000

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