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Derivative Financial Instruments - Effect of Derivative Instruments on Consolidated Statement of Earnings (Detail) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Derivatives, Fair Value [Line Items] |  |  |
Derivative, Gain (Loss) on Derivative, Net, Total | $ 19,009 | $ (4,868) | $ 0
Fair Value Hedging [Member] |  |  |
Derivatives, Fair Value [Line Items] |  |  |
Derivative, Gain (Loss) on Derivative, Net, Total | 15,619 | (4,868) | 0
Cash Flow Hedging [Member] |  |  |
Derivatives, Fair Value [Line Items] |  |  |
Derivative, Gain (Loss) on Derivative, Net, Total | 3,390 | 0 | 0
Derivatives Not Designated as Hedging Instruments [Member] |  |  |
Derivatives, Fair Value [Line Items] |  |  |
Amount of Gain Recognized in Income on Derivative Instruments | 211 | 12 | 0
Derivatives Not Designated as Hedging Instruments [Member] | Interest rate swaps |  |  |
Derivatives, Fair Value [Line Items] |  |  |
Amount of Gain Recognized in Income on Derivative Instruments | $ 211 | $ 12 | $ 0
Derivative, Gain, Statement of Income or Comprehensive Income [Extensible Enumeration] | Noninterest Income | Noninterest Income | Noninterest Income
Derivatives designated as hedging instruments |  |  |
Derivatives, Fair Value [Line Items] |  |  |
Derivative, Gain (Loss) on Derivative, Net, Total | $ 16,795 | $ 8,210 | $ 0
Derivatives designated as hedging instruments | Fair Value Hedging [Member] |  |  |
Derivatives, Fair Value [Line Items] |  |  |
Derivative, Gain (Loss) on Derivative, Net, Total | $ 14,377 | $ 8,210 | $ 0
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] | Comprehensive Income (Loss), Net of Tax, Attributable to Parent | Comprehensive Income (Loss), Net of Tax, Attributable to Parent | Comprehensive Income (Loss), Net of Tax, Attributable to Parent
Derivatives designated as hedging instruments | Cash Flow Hedging [Member] |  |  |
Derivatives, Fair Value [Line Items] |  |  |
Derivative, Gain (Loss) on Derivative, Net, Total | $ 2,418 | $ 0 | $ 0
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] | Comprehensive Income (Loss), Net of Tax, Attributable to Parent | Comprehensive Income (Loss), Net of Tax, Attributable to Parent | Comprehensive Income (Loss), Net of Tax, Attributable to Parent

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- Definition Amount of increase (decrease) in the fair value of derivatives recognized in the income statement. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4A -Subparagraph (b)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480434/815-10-50-4A + Details
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- Definition Indicates line item in statement of income or comprehensive income that includes gain (loss) from derivative. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4A -Subparagraph (b)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480434/815-10-50-4A + Details
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- Definition Amount of increase in the fair value of derivatives recognized in the income statement. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4A -Subparagraph (b)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480434/815-10-50-4A + Details
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