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Fair Values of Financial Instruments - Summary of Difference Between Aggregate Fair Value and Remaining Contractual Principal Outstanding for Financial Instruments for which Fair Value Option has been Elected (Detail) - USD ($)
$ in Thousands
Dec. 31, 2025
Dec. 31, 2024
Fair Value Disclosures [Abstract]    
Loans held for sale, unpaid principal balance $ 30,567 $ 43,698
Loans held for sale, fair value 31,277 44,360
Loans held for sale, fair value over/(under) unpaid principal balance $ 710 $ 662