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Fair Value - Undesignated Derivative Instruments (Detail) - Mortgage Banking - Level 2 - Fair Value, Recurring - USD ($) $ in Thousands | Mar. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Other Assets | Rate Lock Commitments |  |
Derivatives, Fair Value [Line Items] |  |
Gross assets | $ 41,474 | $ 61,150
Gross liabilities | 3,263 | 168
Net rate lock commitments and forward sales contracts | 38,211 | 60,982
Accrued Liabilities | Forward Sales Contracts |  |
Derivatives, Fair Value [Line Items] |  |
Gross assets | 1,432 | 8
Gross liabilities | 4,520 | 18,305
Net rate lock commitments and forward sales contracts | $ (3,088) | $ (18,297)

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