Consolidated Statements of Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
Interest income:
Loans, including fees	$ 336,285	$ 334,608
Securities:
Taxable	115,199	116,256
Tax-exempt	64,898	54,607
Interest-bearing deposits	61,456	79,495
Federal funds sold	44	40
Resell agreements	85	111
Total interest income	577,967	585,117
Interest expense:
Deposits	108,243	133,168
Federal funds purchased	219	201
Repurchase agreements	28,084	32,419
Junior subordinated deferrable interest debentures	1,735	1,945
Subordinated notes	1,164	1,164
Total interest expense	139,445	168,897
Net interest income	438,522	416,220
Credit loss expense	6,745	13,070
Net interest income after credit loss expense	431,777	403,150
Non-interest income:
Trust and investment management fees	47,957	42,931
Service charges on deposit accounts	32,157	28,621
Insurance commissions and fees	22,075	21,019
Interchange and card transaction fees	6,532	5,402
Other charges, commissions, and fees	13,268	13,586
Net gain (loss) on securities transactions	0	(14)
Other	14,326	12,466
Total non-interest income	136,315	124,011
Non-interest expense:
Salaries and wages	166,190	160,857
Employee benefits	44,656	42,157
Net occupancy	34,753	33,277
Technology, furniture, and equipment	41,674	40,118
Deposit insurance	7,203	7,184
Other	71,210	64,473
Total non-interest expense	365,686	348,066
Income before income taxes	202,406	179,095
Income taxes	31,419	28,173
Net income	170,987	150,922
Preferred stock dividends	1,669	1,669
Net income available to common shareholders	$ 169,318	$ 149,253
Earnings per common share:
Basic	$ 2.65	$ 2.30
Diluted	$ 2.65	$ 2.30