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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, 2022 | Dec. 31, 2021
Core Deposit Intangibles [Roll Forward] |  |
Core deposit intangibles, beginning balance | $ 36,265 |
Fully amortized portion | (8,074) | $ (1,460)
Acquisition of VRB | 10,635 | 0
Core deposit intangibles, ending balance | 38,826 | 36,265
Accumulated Amortization, Core Deposit Intangibles [Roll Forward] |  |
Accumulated amortization, gross | (23,896) | (19,891)
Fully amortized portion | 8,074 | 1,460
Amortization expense | (6,334) | (5,465)
Accumulated amortization, gross ending balance | (22,156) | (23,896)
Core deposit intangibles |  |
Core Deposit Intangibles [Roll Forward] |  |
Core deposit intangibles, beginning balance | 36,265 | 37,725
Core deposit intangibles, ending balance |  | 36,265
Accumulated Amortization, Core Deposit Intangibles [Roll Forward] |  |
Core deposit intangibles, net, ending balance | $ 16,670 | $ 12,369

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- Definition Core deposit intangibles additions. + References No definition available. + Details
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- Definition Core deposit intangibles reductions. + 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 -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + 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 -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI https://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(16)) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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