Loans and Allowance for Credit Losses - Loans - Non-accrual Loans by Classes of the Loan Portfolio Including Loans Acquired With Credit Deterioration (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivable, with allowance	$ 1,931
Financing receivable, no allowance	11,527
Financing receivable, recorded investment, nonaccrual status	13,458	$ 8,195
Commercial portfolio \| Commercial real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivable, with allowance	461
Financing receivable, no allowance	6,228
Financing receivable, recorded investment, nonaccrual status	6,689	4,864
Commercial portfolio \| Commercial and industrial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivable, with allowance	1,375
Financing receivable, no allowance	181
Financing receivable, recorded investment, nonaccrual status	1,556	1,222
Commercial portfolio \| Construction
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivable, with allowance	0
Financing receivable, no allowance	2,256
Financing receivable, recorded investment, nonaccrual status	2,256	0
Consumer portfolio \| Residential mortgage
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivable, with allowance	95
Financing receivable, no allowance	2,862
Financing receivable, recorded investment, nonaccrual status	2,957	1,698
Consumer portfolio \| Consumer
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing receivable, with allowance	0
Financing receivable, no allowance	0
Financing receivable, recorded investment, nonaccrual status	$ 0	$ 411

Financing Receivable, Excluding Accrued Interest, Nonaccrual, With Allowance

No definition available.

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- Definition

Amortized cost excluding accrued interest, of financing receivable on nonaccrual status. 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 16
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479319/326-20-50-16

+ Details

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- Definition

Amortized cost excluding accrued interest, of financing receivable on nonaccrual status with no allowance for credit loss. 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 16
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479319/326-20-50-16

+ Details

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- 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/2009/role/commonPracticeRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 14
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479319/326-20-50-14

Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 80
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479294/326-20-55-80

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