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Derivative Financial Instruments - Schedule of Notional Amounts and Estimated Fair Values of Interest Rate Derivative Contracts Outstanding (Detail) - Non Designated as Hedging Instrument [Member] - USD ($) $ in Thousands | Jun. 30, 2024 | Dec. 31, 2023
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Financial institution counterparties Loan/lease interest rate swaps assets [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Forward Contracts – Assets Notional Amount | $ 1,176,104 | $ 1,040,659
Estimated Fair Value | 70,070 | 58,486
Financial institution counterparties Loan/lease interest rate swaps liabilities [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Forward Contracts – Liability Notional Amount | 553,195 | 617,266
Estimated Fair Value | (7,166) | (20,293)
Financial institution counterparties Loan/lease interest-rate caps assets [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Forward Contracts – Assets Notional Amount | 235,699 | 275,000
Estimated Fair Value | 10,021 | 11,747
Customer counterparties Loan/lease interest rate swaps assets [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Forward Contracts – Assets Notional Amount | 553,195 | 617,266
Estimated Fair Value | 7,166 | 20,482
Customer counterparties Loan/lease interest rate swaps liabilities [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Forward Contracts – Liability Notional Amount | 1,176,104 | 1,040,659
Estimated Fair Value | (70,069) | (58,485)
Customer counterparties Loan/lease interest rate caps liabilities [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Forward Contracts – Liability Notional Amount | 235,699 | 275,000
Estimated Fair Value | $ (10,019) | $ (11,747)

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