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Goodwill and Intangible Assets - Amortizable Intangible Assets (Detail) - USD ($) $ in Thousands | Dec. 31, 2019 | Dec. 31, 2018
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Finite-Lived Intangible Assets [Line Items] |  |
Amortizable intangible assets Core deposit intangible, Gross Carrying Amount | $ 26,700 |
Core Deposits [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Amortizable intangible assets Core deposit intangible, Gross Carrying Amount | 40,590 | $ 20,711
Amortizable intangible assets Core deposit intangible, Accumulated Amortization | $ (13,911) | $ (10,321)

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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 http://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 http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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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 No definition available. + Details
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- Details
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