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Goodwill and Other Intangible Assets - Summary of Core Deposit Intangibles (Detail) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022
Core Deposit Intangibles [Roll Forward] |  |
Core deposit intangibles, beginning balance | $ 38,826 |
Fully amortized portion | (2,046) | $ (8,074)
Acquisition of VRB | 0 | 10,635
Core deposit intangibles, ending balance | 36,780 | 38,826
Accumulated Amortization, Core Deposit Intangibles [Roll Forward] |  |
Accumulated amortization, gross | (22,156) | (23,896)
Fully amortized portion | 2,046 | 8,074
Amortization expense | (6,118) | (6,334)
Accumulated amortization, gross ending balance | (26,228) | (22,156)
Core deposit intangibles |  |
Core Deposit Intangibles [Roll Forward] |  |
Core deposit intangibles, beginning balance | 38,826 | 36,265
Core deposit intangibles, ending balance |  | 38,826
Accumulated Amortization, Core Deposit Intangibles [Roll Forward] |  |
Core deposit intangibles, net, ending balance | $ 10,552 | $ 16,670

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- Definition Core deposit intangibles additions. + References No definition available. + Details
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- Definition Bank deposits belonging to an acquired bank that can be counted on as a stable source of lending funds. These deposits have the following attributes: predictable costs and low sensitivity to interest rates. This intangible asset is usually amortized over its estimated useful life. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482665/350-30-50-2 + Details
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- Definition Accumulated amount of 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 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(16)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -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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- 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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