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Goodwill and Intangible Assets - Schedule of Changes in Intangible Assets (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Finite-Lived Intangible Assets [Roll Forward] |  |  |
Intangible amortization | $ 1,780 | $ 2,012 | $ 1,180
Core Deposit Intangible |  |  |
Finite-Lived Intangible Assets [Roll Forward] |  |  |
Intangible assets, beginning balance | 4,964 | 7,282 | 4,311
Riverview (adjustment) acquisition | 0 | (705) | 4,096
Intangible amortization | 1,314 | 1,613 | 1,125
Intangible assets, ending balance | 4,649 | 4,964 | 7,282
Core Deposit Intangible | Brunswick Acquisition |  |  |
Finite-Lived Intangible Assets [Roll Forward] |  |  |
Brunswick core deposit intangibles | 999 | 0 | 0
Customer Lists Intangible |  |  |
Finite-Lived Intangible Assets [Roll Forward] |  |  |
Intangible assets, beginning balance | 2,275 | 2,127 |
Intangible amortization | 445 | 393 |
Intangible assets, ending balance | $ 1,830 | $ 2,275 | $ 2,127

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- Definition The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 45 -Paragraph 28 -Subparagraph (b) -SubTopic 10 -Topic 230 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-28 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 45 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482686/350-30-45-2 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482665/350-30-50-2 + Details
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- Definition Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 926 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Publisher FASB -URI https://asc.fasb.org//1943274/2147483154/926-20-50-5 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 350 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482665/350-30-50-2 + Details
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