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Investment Securities - Amortized Cost and Estimated Fair Values of Securities (Details) - USD ($) $ in Thousands | Sep. 30, 2025 | Dec. 31, 2024
--- | --- | ---
Pledged available for sale securities |  |
Amortized Cost | $ 188,267 | $ 159,593
Restricted securities | 20,364 | 20,253
Pledged held to maturity securities |  |
Amortized Cost | 433,535 | 481,280
Estimated Fair Value | 393,540 | 424,734
Collateral Pledged |  |
Pledged available for sale securities |  |
Amortized Cost | 73,816 | 76,280
Restricted securities | 67,644 | 67,926
Pledged held to maturity securities |  |
Amortized Cost | 211,434 | 197,474
Estimated Fair Value | $ 191,089 | $ 173,248

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