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Investment Securities - Trading Securities (Details) - USD ($) $ in Thousands | Sep. 30, 2023 | Dec. 31, 2022
--- | --- | ---
Investment Securities |  |
Trading securities | $ 114,154 | $ 31,263
U.S. Government agencies |  |
Investment Securities |  |
Trading securities | 9,945 | 11,190
Residential mortgage pass-through securities issued or guaranteed by U.S. government agencies or sponsored enterprises |  |
Investment Securities |  |
Trading securities | 21,399 |
Other residential mortgage issued or guaranteed by U.S. government agencies or sponsored enterprises |  |
Investment Securities |  |
Trading securities | 13,590 |
Commercial mortgage-backed securities issued by U.S. government agencies or sponsored enterprises |  |
Investment Securities |  |
Trading securities | 44,910 | 4,589
State and municipal obligations |  |
Investment Securities |  |
Trading securities | 16,059 | 13,993
Other debt securities |  |
Investment Securities |  |
Trading securities | $ 8,251 | $ 1,491

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