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Leases - Narrative (Details) $ in Thousands | 12 Months Ended
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Dec. 31, 2023 USD ($) branchOffice | Dec. 31, 2022 USD ($) | Dec. 31, 2021 USD ($)
Lessee, Lease, Description [Line Items] |  |  |
Weighted average remaining lease term | 19 years 9 months 18 days | 19 years 7 months 6 days |
Weighted average discount rate (as a percent) | 3.19% | 2.97% |
Operating right-of-use lease assets | $ 17,063 | $ 18,733 |
Lease liabilities | 17,833 | 19,391 |
Total operating lease expense | $ 3,100 | $ 2,900 | $ 2,600
Minimum |  |  |
Lessee, Lease, Description [Line Items] |  |  |
Option extension period | 5 years |  |
Maximum |  |  |
Lessee, Lease, Description [Line Items] |  |  |
Option extension period | 10 years |  |
Land and Building |  |  |
Lessee, Lease, Description [Line Items] |  |  |
Number of branch locations | branchOffice | 17 |  |
Land |  |  |
Lessee, Lease, Description [Line Items] |  |  |
Number of branch locations | branchOffice | 10 |  |

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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/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org//1943274/2147478964/842-20-50-3 + Details
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- Definition Term of lessee's operating lease renewal, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (a)(3) -Publisher FASB -URI https://asc.fasb.org//1943274/2147478964/842-20-50-3 + Details
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- Definition Amount of operating lease expense. Excludes sublease income. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 4 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479041/842-20-45-4 + Details
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- Definition Weighted average remaining lease term for operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 53 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479589/842-20-55-53 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Subparagraph (g)(3) -Publisher FASB -URI https://asc.fasb.org//1943274/2147478964/842-20-50-4 + Details
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