Consolidated Statements of Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Interest income:
Loans, including fees	$ 330,540	$ 269,715
Securities:
Taxable	98,062	97,775
Tax-exempt	55,259	66,634
Interest-bearing deposits	100,361	99,245
Federal funds sold	80	758
Resell agreements	1,198	1,068
Total interest income	585,500	535,195
Interest expense:
Deposits	155,634	97,989
Federal funds purchased	444	583
Repurchase agreements	35,948	33,651
Junior subordinated deferrable interest debentures	2,259	1,988
Subordinated notes	1,164	1,164
Total interest expense	195,449	135,375
Net interest income	390,051	399,820
Credit loss expense	13,650	9,104
Net interest income after credit loss expense	376,401	390,716
Non-interest income:
Trust and investment management fees	39,085	36,144
Service charges on deposit accounts	24,795	21,879
Insurance commissions and fees	18,296	18,952
Interchange and card transaction fees	4,474	4,889
Other charges, commissions, and fees	12,060	11,704
Net gain (loss) on securities transactions	0	21
Other	12,667	11,676
Total non-interest income	111,377	105,265
Non-interest expense:
Salaries and wages	148,000	130,345
Employee benefits	35,970	33,922
Net occupancy	31,778	30,349
Technology, furniture, and equipment	34,995	32,481
Deposit insurance	14,724	6,245
Other	60,750	51,800
Total non-interest expense	326,217	285,142
Income before income taxes	161,561	210,839
Income taxes	25,871	33,186
Net income	135,690	177,653
Preferred stock dividends	1,669	1,669
Net income available to common shareholders	$ 134,021	$ 175,984
Earnings per common share:
Basic	$ 2.06	$ 2.71
Diluted	$ 2.06	$ 2.70