Securities - Trading Securities (Details) - USD ($) $ in Thousands	Jun. 30, 2026	Dec. 31, 2025
Schedule of fair value of trading securities
Trading, at fair value	$ 674,054	$ 617,408
Investment-related Liabilities
Securities sold, not yet purchased, at fair value	90,264	37,955
U.S. Treasury securities
Schedule of fair value of trading securities
Trading, at fair value		123
Bonds
Schedule of fair value of trading securities
Trading, at fair value	34,769	37,222
Residential mortgage-backed securities
Schedule of fair value of trading securities
Trading, at fair value	101,106	152,343
Collateralized mortgage obligations
Schedule of fair value of trading securities
Trading, at fair value	27,724	58,611
Other
Schedule of fair value of trading securities
Trading, at fair value	9,267
Corporate debt securities
Schedule of fair value of trading securities
Trading, at fair value	63,299	41,136
States and political subdivisions
Schedule of fair value of trading securities
Trading, at fair value	384,132	295,615
Private-label securitized product
Schedule of fair value of trading securities
Trading, at fair value	21,400	9,547
Other Debt
Schedule of fair value of trading securities
Trading, at fair value	$ 32,357	$ 22,811