Investment Securities - Trading Securities (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Investment Securities
Trading securities	$ 51,940	$ 77,689
U.S. Government agencies
Investment Securities
Trading securities	12,017	5,154
Residential mortgage-backed securities issued by U.S. government agencies or sponsored enterprises
Investment Securities
Trading securities	11,556	6,853
Other residential mortgage issued or guaranteed by U.S. government agencies or sponsored enterprises
Investment Securities
Trading securities	5,921	12,315
Commercial mortgage-backed securities issued by U.S. government agencies or sponsored enterprises
Investment Securities
Trading securities	3,116	29,667
State and municipal obligations
Investment Securities
Trading securities	18,060	20,798
Other debt securities
Investment Securities
Trading securities	$ 1,270	$ 2,902