Condensed Consolidated Statements of Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Interest Income:
Interest and fees on loans and leases	$ 792,045	$ 716,356
Taxable interest on investment securities	135,071	85,566
Non-taxable interest on investment securities	12,514	13,684
Loans held for sale	82	16
Total interest income	951,850	830,928
Interest Expense:
Deposits	335,971	150,204
Securities sold under agreements to repurchase and other borrowings	2,108	7,827
Federal Home Loan Bank advances	37,367	68,126
Long-term debt	8,665	9,488
Total interest expense	384,111	235,645
Net interest income	567,739	595,283
Provision (benefit) for credit losses	45,500	46,749
Net interest income after provision for credit losses	522,239	548,534
Non-interest Income:
Deposit service fees	42,589	45,436
Loan and lease related fees	19,767	23,005
Wealth and investment services	7,924	6,587
Cash surrender value of life insurance policies	5,946	6,728
(Loss) on sale of investment securities, net	(9,826)	(16,747)
Other income	32,953	5,757
Total non-interest income	99,353	70,766
Non-interest Expense:
Compensation and benefits	188,540	173,200
Occupancy	19,439	20,171
Technology and equipment	45,836	44,366
Intangible assets amortization	9,194	9,497
Marketing	4,281	3,476
Professional and outside services	12,981	32,434
Deposit insurance	24,223	12,323
Other expense	31,429	37,000
Total non-interest expense	335,923	332,467
Income before income taxes	285,669	286,833
Income tax expense	69,346	65,829
Net income	216,323	221,004
Less: Preferred stock dividends	4,163	4,163
Net income available to common stockholders	212,160	216,841
Earnings applicable to common stockholders	$ 212,160	$ 216,841
Earnings per common share:
Basic (in dollars per share)	$ 1.23	$ 1.24
Diluted (in dollars per share)	$ 1.23	$ 1.24
Other Interest and Dividend Income	$ 12,138	$ 15,306