Derivative Financial Instruments Notional Amounts and Fair Values of Derivative Financial Instruments (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Derivative [Line Items]
Derivative asset, fair value	$ 174,924	$ 157,612
Derivative liability, gross liability	(280,358)	(245,584)
Interest Rate Lock Commitments [Member]
Derivative [Line Items]
Derivative asset, notional amount	197,685	119,558
Derivative liability, notional amount	2,109	1,015
Derivative asset, fair value	965	460
Derivative liability, gross liability	(3)	(2)
Forward Commitments [Member]
Derivative [Line Items]
Derivative asset, notional amount	0	0
Derivative liability, notional amount	58,500	42,000
Derivative asset, fair value	0	0
Derivative liability, gross liability	(236)	(854)
Interest Rate Swap with Customer [Member]
Derivative [Line Items]
Derivative asset, notional amount	546,330	824,659
Derivative liability, notional amount	4,132,103	3,784,236
Derivative asset, fair value	8,091	22,656
Derivative liability, gross liability	(271,356)	(222,530)
Interest Rate Swap With Counterparty [Member]
Derivative [Line Items]
Derivative asset, notional amount	4,132,103	3,784,236
Derivative liability, notional amount	546,330	824,659
Derivative asset, fair value	166,461	128,235
Derivative liability, gross liability	(8,457)	(23,023)
Balance Sheet Hedging Instruments
Derivative [Line Items]
Derivative asset, notional amount	2,300,000	2,500,000
Derivative liability, notional amount	950,000	750,000
Derivative asset, fair value	245	6,189
Derivative liability, gross liability	(78)	0
Foreign Exchange Contracts With Customer [Member]
Derivative [Line Items]
Derivative asset, notional amount	25,730	4,159
Derivative liability, notional amount	4,081	13,353
Derivative asset, fair value	639	40
Derivative liability, gross liability	(81)	(446)
Foreign Exchange Contracts With Correspondent Banks [Member]
Derivative [Line Items]
Derivative asset, notional amount	4,798	15,969
Derivative liability, notional amount	25,139	6,112
Derivative asset, fair value	127	532
Derivative liability, gross liability	$ (467)	$ (31)