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Derivative Instruments and Hedging Activities - Fair Value Hedging Derivatives (Details) - Fair Value Hedging - Designated as Hedging Instrument - USD ($) $ in Thousands | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2025 | Dec. 31, 2024
Cash Flow Hedging Derivatives |  |
Notional Amount | $ 243,569 | $ 145,850
Weighted Average Pay Rate | 3.56% | 3.52%
Weighted Average Receive Rate | 4.32% | 4.82%
Weighted Average Maturity (Years) | 14 years 9 months 14 days | 19 years 5 months 19 days

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