Loans and Allowance for Credit Losses - Loans on Nonaccrual Status (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual	$ 5,260	$ 6,069
Nonaccrual With No ACL	4,651	5,965
Government guarantees
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual	0	1,067
Nonaccrual With No ACL	0	1,067
Net of government guarantees
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual	5,260	5,002
Nonaccrual With No ACL	4,651	4,898
Commercial & industrial loans
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual	2,884	3,655
Nonaccrual With No ACL	2,358	3,651
Commercial real estate \| Owner occupied properties
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual	253	271
Nonaccrual With No ACL	253	260
Commercial real estate \| Non-owner occupied and multifamily properties
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual	0	0
Nonaccrual With No ACL	0	0
Residential real estate \| 1-4 family residential properties secured by first liens
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual	263	270
Nonaccrual With No ACL	221	224
Residential real estate \| 1-4 family residential properties secured by junior liens and revolving secured by 1-4 family first liens
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual	211	219
Nonaccrual With No ACL	170	176
Residential real estate \| 1-4 family residential construction loans
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual	109	109
Nonaccrual With No ACL	109	109
Other construction, land development and raw land loans
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual	1,540	1,545
Nonaccrual With No ACL	$ 1,540	$ 1,545

Amortized cost excluding accrued interest, of financing receivable on nonaccrual status. Excludes net investment in lease.

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

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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

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- Definition

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+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 16
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479319/326-20-50-16

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