Loans and Allowance for Loan Credit Losses - Schedule of Allowance for Credit Losses by Portfolio Type (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2024	Dec. 31, 2023
Allowance for credit losses:
Balance, beginning of period	$ 4,319	$ 4,482
Provision for (recapture of) loan credit losses	195	(163)
Loans charged-off	0	0
Recoveries collected	0	0
Balance, end of period	4,514	4,319
Cumulative Effect, Period of Adoption, Adjustment
Allowance for credit losses:
Balance, beginning of period		0
Commercial real estate
Allowance for credit losses:
Balance, beginning of period	1,233	905
Provision for (recapture of) loan credit losses	(93)	198
Loans charged-off	0	0
Recoveries collected	0	0
Balance, end of period	1,140	1,233
Commercial real estate \| Cumulative Effect, Period of Adoption, Adjustment
Allowance for credit losses:
Balance, beginning of period		130
Commercial
Allowance for credit losses:
Balance, beginning of period	189	573
Provision for (recapture of) loan credit losses	294	(403)
Loans charged-off	0	0
Recoveries collected	0	0
Balance, end of period	483	189
Commercial \| Cumulative Effect, Period of Adoption, Adjustment
Allowance for credit losses:
Balance, beginning of period		19
Residential real estate closed-end
Allowance for credit losses:
Balance, beginning of period	2,668	2,650
Provision for (recapture of) loan credit losses	(24)	34
Loans charged-off	0	0
Recoveries collected	0	0
Balance, end of period	2,644	2,668
Residential real estate closed-end \| Cumulative Effect, Period of Adoption, Adjustment
Allowance for credit losses:
Balance, beginning of period		(16)
Other consumer loans
Allowance for credit losses:
Balance, beginning of period	229	354
Provision for (recapture of) loan credit losses	18	8
Loans charged-off	0	0
Recoveries collected	0	0
Balance, end of period	$ 247	229
Other consumer loans \| Cumulative Effect, Period of Adoption, Adjustment
Allowance for credit losses:
Balance, beginning of period		$ (133)

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

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479344/326-20-45-1

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+ References

No definition available.

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Subparagraph (e)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-13

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-6

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-13

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- Definition

Amount, excluding accrued interest, of credit loss expense (reversal of expense) on financing receivable. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-13

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