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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

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