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Derivative Financial Instruments - Effect of Derivative Instruments on Consolidated Statement of Earnings (Detail) - USD ($) $ in Thousands | 3 Months Ended
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Mar. 31, 2025 | Mar. 31, 2024
Derivatives, Fair Value [Line Items] |  |
Derivative, Gain (Loss) on Derivative, Net, Total | $ (2,371) | $ 13,425
Cash Flow Hedges [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Derivative, Gain (Loss) on Derivative, Net, Total | (1,590) | 556
Fair Value Hedges [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Derivative, Gain (Loss) on Derivative, Net, Total | (781) | 12,869
Derivatives Not Designated as Hedging Instruments [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Amount of Gain Recognized in Income on Derivative Instruments | 0 | 0
Derivatives Not Designated as Hedging Instruments [Member] | Interest Rate Swaps [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Amount of Gain Recognized in Income on Derivative Instruments | $ 0 | $ 0
Derivative, Gain, Statement of Income or Comprehensive Income [Extensible Enumeration] | Noninterest Income | Noninterest Income
Derivatives designated as hedging instruments [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Derivative, Gain (Loss) on Derivative, Net, Total | $ 1,220 | $ 3,865
Derivatives designated as hedging instruments [Member] | Cash Flow Hedges [Member] |  |
Derivatives, Fair Value [Line Items] |  |
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
Derivative, Gain (Loss) on Derivative, Net, Total | $ 168 | $ 178
Derivatives designated as hedging instruments [Member] | Fair Value Hedges [Member] |  |
Derivatives, Fair Value [Line Items] |  |
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
Derivative, Gain (Loss) on Derivative, Net, Total | $ 1,052 | $ 3,687

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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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- Definition Indicates line item in statement of income or comprehensive income that includes gain from derivative. + 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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