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Securities - Trading Securities (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Investment Securities
Trading securities	$ 66,188	$ 31,321
U.S. Government agencies
Investment Securities
Trading securities	10,352	1,537
Residential mortgage pass-through securities issued or guaranteed by U.S. government agencies or sponsored enterprises
Investment Securities
Trading securities	11,383	14,461
Other residential mortgage issued or guaranteed by U.S. government agencies or sponsored enterprises
Investment Securities
Trading securities	1,148
Commercial mortgage-backed securities issued by U.S. government agencies or sponsored enterprises
Investment Securities
Trading securities	8,467
State and municipal obligations
Investment Securities
Trading securities	31,263	14,620
Other debt securities
Investment Securities
Trading securities	$ 3,575	$ 703

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