Fair Value - Undesignated Derivative Instruments (Detail) - Mortgage Banking - Level 2 - Fair Value, Recurring - USD ($) $ in Thousands	Jun. 30, 2025	Dec. 31, 2024
Other Assets \| Rate Lock Commitments
Derivatives, Fair Value [Line Items]
Gross assets	$ 47,440	$ 34,935
Gross liabilities	636	25,739
Net rate lock commitments and forward sales contracts	46,804	9,196
Accrued Liabilities \| Forward Sales Contracts
Derivatives, Fair Value [Line Items]
Gross assets	179	6,822
Gross liabilities	11,601	1,122
Net rate lock commitments and forward sales contracts	$ (11,422)	$ 5,700

Fair value, before effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets elected not to be offset. Excludes assets not subject to a master netting arrangement.

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