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Derivative Financial Instruments - Fair Value of Derivative Instruments (Detail) - USD ($) $ in Thousands	Jun. 30, 2025	Dec. 31, 2024	Jun. 30, 2023
Fair Value Hedging [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset Notional	$ 700,000	$ 300,000	$ 1,000,000
Other Assets [Member] \| Derivatives Not Designated as Hedging Instruments [Member]
Derivatives, Fair Value [Line Items]
Asset Derivatives	188	30
Other Assets [Member] \| Derivatives Not Designated as Hedging Instruments [Member] \| Interest Rate Swaps [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset Notional	352,677	363,440
Asset Derivatives	188	30
Other Assets [Member] \| Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Asset Derivatives	0	7,222
Other Assets [Member] \| Designated as Hedging Instrument [Member] \| Interest Rate Swaps [Member] \| Fair Value Hedging [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset Notional	700,000	700,000
Asset Derivatives	0	7,222
Other Assets [Member] \| Designated as Hedging Instrument [Member] \| Interest Rate Swaps [Member] \| Cash Flow Hedging [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset Notional		0
Asset Derivatives	0	0
Other Liabilities [Member] \| Derivatives Not Designated as Hedging Instruments [Member]
Derivatives, Fair Value [Line Items]
Liability Derivatives	188	30
Other Liabilities [Member] \| Derivatives Not Designated as Hedging Instruments [Member] \| Interest Rate Swaps [Member]
Derivatives, Fair Value [Line Items]
Derivative Liability, Notional Amount	352,677	363,440
Liability Derivatives	188	30
Other Liabilities [Member] \| Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Liability Derivatives	12,440	517
Other Liabilities [Member] \| Designated as Hedging Instrument [Member] \| Interest Rate Swaps [Member] \| Fair Value Hedging [Member]
Derivatives, Fair Value [Line Items]
Derivative Liability, Notional Amount		0
Liability Derivatives	9,585	0
Other Liabilities [Member] \| Designated as Hedging Instrument [Member] \| Interest Rate Swaps [Member] \| Cash Flow Hedging [Member]
Derivatives, Fair Value [Line Items]
Derivative Liability, Notional Amount	300,000	300,000
Liability Derivatives	$ 2,855	$ 517