v3.26.1
Derivatives and Hedging Activities - Effect of Derivative Financial Instruments that are Not Designated as Hedging Instruments on Consolidated Statements of Income (Detail) - Not Designated as Hedging Instrument - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Derivative Instruments Gain Loss [Line Items]        
Amount of Gain or (Loss) Recognized in Income on Derivative $ 3 $ (16) $ 8 $ (31)
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Noninterest Income, Other Operating Income Noninterest Income, Other Operating Income Noninterest Income, Other Operating Income Noninterest Income, Other Operating Income
Interest Rate Products        
Derivative Instruments Gain Loss [Line Items]        
Amount of Gain or (Loss) Recognized in Income on Derivative $ 3 $ (16) $ 8 $ (31)