Condensed Consolidated Statements of Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Interest Income:
Interest and fees on loans and leases	$ 755,117	$ 792,045
Taxable interest on investment securities	187,115	135,071
Non-taxable interest on investment securities	7,354	12,514
Loans held for sale	15	82
Other interest and dividends	23,886	12,138
Total interest income	973,487	951,850
Interest Expense:
Deposits	326,383	335,971
Securities sold under agreements to repurchase and federal funds purchased	1,676	2,108
Federal Home Loan Bank advances	23,589	37,367
Long-term debt	9,647	8,665
Total interest expense	361,295	384,111
Net interest income	612,192	567,739
Provision for credit losses	77,500	45,500
Net interest income after provision for credit losses	534,692	522,239
Non-interest Income:
Deposit service fees	38,895	42,589
Loan and lease related fees	17,621	19,767
Wealth and investment services	7,789	7,924
Cash surrender value of life insurance policies	7,992	5,946
Gain (loss) on sale of investment securities, net	220	(9,826)
Other income	20,089	32,953
Total non-interest income	92,606	99,353
Non-interest Expense:
Compensation and benefits	198,645	188,540
Occupancy	19,717	19,439
Technology and equipment	47,719	45,836
Intangible assets amortization	9,237	9,194
Marketing	4,027	4,281
Professional and outside services	17,226	12,981
Deposit insurance	16,345	24,223
Other expense	30,728	31,429
Total non-interest expense	343,644	335,923
Income before income taxes	283,654	285,669
Income tax expense	56,737	69,346
Net income	226,917	216,323
Preferred stock dividends	4,163	4,163
Income allocated to participating securities	2,387	2,101
Net income applicable to common stockholders	$ 220,367	$ 210,059
Earnings per common share:
Basic (in dollars per share)	$ 1.30	$ 1.23
Diluted (in dollars per share)	$ 1.30	$ 1.23