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Allowance for Credit Losses - Loans - Amortized cost basis of collateral-dependent loans (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Loans	$ 1,055,683	$ 1,067,949
Collateral
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Loans	14,077	13,590
Retail | Collateral
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Loans	1,126
Other commercial real estate (non-owner occupied)
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Loans	236,352	233,882
Other commercial real estate (non-owner occupied) | Collateral
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Loans	7,972	8,773
Commercial Portfolio Segment
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Loans	771,497	782,228
Commercial Portfolio Segment | Commercial real estate (owner occupied)
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Loans	88,481	86,953
Commercial Portfolio Segment | Commercial real estate (owner occupied) | Collateral
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Loans	3,818	3,429
Commercial Portfolio Segment | Commercial and industrial
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Loans	140,361	147,251
Commercial Portfolio Segment | Commercial and industrial | Collateral
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Loans	1,000	1,000
Commercial Portfolio Segment | Other commercial real estate (non-owner occupied)
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Loans	236,352	233,882
Residential mortgages
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Loans	172,612	177,110
Residential mortgages | Collateral
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Loans	161	378
Consumer
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Loans	$ 111,574	108,611
Consumer | Collateral
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Loans		$ 10

X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

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

Reference 2: 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

Reference 3: 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

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-13

Reference 5: 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

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-13

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Name Regulation S-K (SK)
-Number 229
-Section 1405
-Paragraph c
-Publisher SEC

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- Definition

Amortized cost excluding accrued interest, before allowance for credit loss, of financing receivable. Excludes net investment in lease.

+ References

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

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 3B
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-3B

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-5

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