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Short-Term Borrowings - Short-Term Borrowings and the Related Weighted-Average Interest Rates (Detail) - USD ($) $ in Thousands | Dec. 31, 2025 | Dec. 31, 2024
--- | --- | ---
Short-Term Debt [Line Items] |  |
Short-term borrowings | $ 198,573 | $ 176,090
Federal Funds Purchased [Member] |  |
Short-Term Debt [Line Items] |  |
Short-term borrowings | 0 | 0
Securities Sold Under Agreements to Repurchase [Member] |  |
Short-Term Debt [Line Items] |  |
Short-term borrowings | $ 198,573 | $ 176,090

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