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Fair Value - Undesignated Derivative Instruments (Detail) - Mortgage Banking - Level 2 - Fair Value, Recurring - USD ($)
$ in Thousands
Sep. 30, 2022
Dec. 31, 2021
Other Assets | Rate Lock Commitments    
Derivatives, Fair Value [Line Items]    
Gross assets $ 36,695 $ 15,949
Gross liabilities 88,697 1,790
Net rate lock commitments and forward sales contracts (52,002) 14,159
Accrued Liabilities | Forward Sales Contracts    
Derivatives, Fair Value [Line Items]    
Gross assets 41,536 708
Gross liabilities 3,148 926
Net rate lock commitments and forward sales contracts $ 38,388 $ (218)