CONSOLIDATED STATEMENTS OF INCOME (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Interest income:
Loans, including fees	$ 568,857	$ 551,659	$ 1,116,225	$ 1,092,858
Securities:
Taxable	66,989	51,578	128,842	96,048
Tax-exempt	27,104	24,372	52,334	48,972
Federal funds sold and other	31,820	40,781	65,529	80,995
Total interest income	694,770	668,390	1,362,930	1,318,873
Interest expense:
Deposits	284,614	304,449	558,007	605,417
Securities sold under agreements to repurchase	1,222	1,316	2,248	2,715
Federal Home Loan Bank advances and other borrowings	29,401	30,363	58,714	60,445
Total interest expense	315,237	336,128	618,969	668,577
Net interest income	379,533	332,262	743,961	650,296
Provision for credit losses	24,245	30,159	41,205	64,656
Net interest income after provision for credit losses	355,288	302,103	702,756	585,640
Noninterest income:
Total noninterest income	125,457	34,288	223,883	144,391
Noninterest expense:
Salaries and employee benefits	181,246	150,117	353,335	296,127
Equipment and occupancy	48,043	41,036	94,223	80,682
Other real estate expense, net	137	22	195	106
Marketing and other business development	8,772	6,776	17,438	12,901
Postage and supplies	3,192	3,135	6,562	5,906
Amortization of intangibles	1,400	1,568	2,817	3,152
Other noninterest expense	43,656	68,735	87,363	114,880
Total noninterest expense	286,446	271,389	561,933	513,754
Income before income taxes	194,299	65,002	364,706	216,277
Income tax expense	35,759	11,840	65,758	39,171
Net income	158,540	53,162	298,948	177,106
Preferred stock dividends	(3,798)	(3,798)	(7,596)	(7,596)
Net income available to common shareholders	$ 154,742	$ 49,364	$ 291,352	$ 169,510
Per share information:
Basic net income per common share	$ 2.01	$ 0.65	$ 3.79	$ 2.22
Diluted net income per common share	$ 2.00	$ 0.64	$ 3.77	$ 2.21
Weighted average common shares outstanding:
Basic	76,891,035	76,506,121	76,809,244	76,392,287
Diluted	77,277,054	76,644,227	77,212,262	76,531,419
Service charges on deposit accounts
Noninterest income:
Total noninterest income	$ 17,092	$ 14,563	$ 34,120	$ 28,002
Investment services
Noninterest income:
Total noninterest income	19,324	15,720	38,141	30,471
Insurance sales commissions
Noninterest income:
Total noninterest income	3,693	3,715	8,367	7,567
Gain on mortgage loans sold, net
Noninterest income:
Total noninterest income	1,965	3,270	4,472	6,149
Investment losses on sales, net
Noninterest income:
Total noninterest income	0	(72,103)	(12,512)	(72,103)
Trust fees
Noninterest income:
Total noninterest income	9,280	8,323	18,620	15,738
Income from equity method investment
Noninterest income:
Total noninterest income	26,027	18,688	46,432	34,723
Gain on sale of fixed assets
Noninterest income:
Total noninterest income	202	325	412	383
Other noninterest income
Noninterest income:
Total noninterest income	$ 47,874	$ 41,787	$ 85,831	$ 93,461