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Investment Securities - Trading Securities (Details) - USD ($) $ in Thousands | Sep. 30, 2024 | Dec. 31, 2023
--- | --- | ---
Investment Securities |  |
Trading securities | $ 87,103 | $ 31,321
U.S. Government agencies |  |
Investment Securities |  |
Trading securities | 10,730 | 1,537
Residential mortgage-backed securities issued by U.S. government agencies or sponsored enterprises |  |
Investment Securities |  |
Trading securities | 15,969 | 14,461
Commercial mortgage-backed securities issued by U.S. government agencies or sponsored enterprises |  |
Investment Securities |  |
Trading securities | 24,344 |
State and municipal obligations |  |
Investment Securities |  |
Trading securities | 26,347 | 14,620
Small Business Administration loan-backed securities |  |
Investment Securities |  |
Trading securities | 8,552 |
Other debt securities |  |
Investment Securities |  |
Trading securities | $ 1,161 | $ 703

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