Short and Long-term Funding, Composition (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Short-Term Debt [Abstract]
Federal Funds Purchased	$ 370,325	$ 220,160
Securities Sold under Agreements to Repurchase	100,044	106,620
Federal Funds Purchased and Securities Sold under Agreements to Repurchase, Total	470,369	326,780
Debt Instrument [Line Items]
Senior Notes	300,000	0
Subordinated Debt	550,000	550,000
Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net	(8,664)	(7,748)
Finance Lease, Liability	295	383
Other Long-term Debt	837,635	541,269
TotalShortTermLongTermExcludingFHLB	1,308,004	868,049
Advances from Federal Home Loan Banks [Abstract]
Advance from Federal Home Loan Bank	1,250,000	740,000
Long-Term Federal Home Loan Bank Advances	611,551	1,209,907
Federal Home Loan Bank, Advances, Branch of FHLB Bank, Amount of Advances	1,853,807	1,940,194
Debt, Long-Term and Short-Term, Combined Amount, Total	3,161,811	2,808,243
Fair Value Hedging
Debt Instrument [Line Items]
Subordinated Debt	(3,996)	(1,366)
Advances from Federal Home Loan Banks [Abstract]
Advance from Federal Home Loan Bank	$ (7,744)	$ (9,713)