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Investment Securities - Trading Securities (Details) - USD ($) $ in Thousands | Sep. 30, 2025 | Dec. 31, 2024
--- | --- | ---
Investment Securities |  |
Trading securities | $ 107,519 | $ 102,932
U.S. Government agencies |  |
Investment Securities |  |
Trading securities | 16,480 | 15,002
Residential mortgage-backed securities issued by U.S. government agencies or sponsored enterprises |  |
Investment Securities |  |
Trading securities | 5,753 | 14,803
Other residential mortgage issued or guaranteed by U.S. government agencies or sponsored enterprises |  |
Investment Securities |  |
Trading securities | 5,017 |
Commercial mortgage-backed securities issued by U.S. government agencies or sponsored enterprises |  |
Investment Securities |  |
Trading securities | 15,222 | 14,419
State and municipal obligations |  |
Investment Securities |  |
Trading securities | 37,195 | 35,896
Small Business Administration loan-backed securities |  |
Investment Securities |  |
Trading securities | 27,285 | 22,571
Other debt securities |  |
Investment Securities |  |
Trading securities | $ 567 | $ 241

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