v3.25.2
Securities - Gross Realized Gains and Losses (Detail) - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Debt Securities, Available-for-Sale, Realized Gain (Loss) [Abstract]        
Net realized losses $ 0 $ 0 $ 0 $ 0