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Loans and Allowance for Loan Credit Losses - Schedule of Composition of the Loan Portfolio (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Jun. 30, 2025	Dec. 31, 2024		Sep. 30, 2024	Jun. 30, 2024	Dec. 31, 2023
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Loans	$ 284,084		$ 313,287
Less allowance for credit losses	(4,110)	$ (4,193)	(4,514)		$ (4,206)	$ (4,337)	$ (4,319)
Loans, net	279,974		308,773	[1]
Commercial real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Loans	49,061		53,480
Less allowance for credit losses	(1,297)	(1,307)	(1,140)		(1,022)	(1,136)	(1,233)
Commercial
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Loans	4,418		27,883
Less allowance for credit losses	(77)	(88)	(483)		(164)	(167)	(189)
Residential real estate closed-end
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Loans	209,663		210,730
Less allowance for credit losses	(2,471)	(2,560)	(2,644)		(2,774)	(2,756)	(2,668)
Other consumer loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Loans	20,942		21,194
Less allowance for credit losses	$ (265)	$ (238)	$ (247)		$ (246)	$ (278)	$ (229)
[1] Derived from audited consolidated financial statements.

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Amount excluding accrued interest, of allowance for credit loss on financing receivable. Excludes net investment in lease.

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