Borrowings - Schedule of Borrowing Usage and Interest Rate Information for Federal Funds Purchased and Retail Repurchase Agreements (Detail) - USD ($) $ in Thousands |
12 Months Ended | |
|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
|
| Debt Disclosure [Abstract] | ||
| Average daily balance during the period | $ 41,479 | $ 39,791 |
| Average interest rate during the period | 1.77% | 1.89% |
| Maximum month-end balance during the period | $ 46,708 | $ 47,312 |
| Weighted average interest rate at period-end | 1.46% | 1.74% |