Consolidated Statements of Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
INTEREST INCOME
Loans	$ 342,994	$ 169,919	$ 651,435	$ 319,389
Securities:
Taxable interest	54,587	47,295	107,636	90,677
Tax-exempt interest	25,550	23,538	50,856	47,393
Total securities income	80,137	70,833	158,492	138,070
Federal funds and resell agreements	3,889	3,497	9,540	5,947
Interest-bearing due from banks	34,206	4,207	50,372	6,664
Trading securities	154	114	288	299
Total interest income	461,380	248,570	870,127	470,369
INTEREST EXPENSE
Deposits	170,550	15,439	298,449	21,612
Federal funds and repurchase agreements	24,745	4,998	48,047	7,146
Other	40,474	3,342	56,324	6,465
Total interest expense	235,769	23,779	402,820	35,223
Net interest income	225,611	224,791	467,307	435,146
Provision for credit losses	13,000	13,400	36,250	6,900
Net interest income after provision for credit losses	212,611	211,391	431,057	428,246
NONINTEREST INCOME
Trust and securities processing	61,589	58,886	123,948	118,414
Trading and investment banking	4,800	7,123	10,108	12,563
Service charges on deposit accounts	21,381	20,835	42,540	45,477
Insurance fees and commissions	225	245	499	504
Brokerage fees	13,604	12,391	27,280	15,847
Bankcard fees	18,579	17,840	36,751	34,475
Investment securities gains (losses), net	900	60,720	(4,424)	60,198
Other	17,004	(1,705)	31,580	12,535
Total noninterest income	138,082	176,335	268,282	300,013
NONINTEREST EXPENSE
Salaries and employee benefits	143,312	121,390	285,810	252,024
Occupancy, net	11,746	11,976	23,923	24,208
Equipment	17,086	18,315	34,935	36,479
Supplies and services	4,195	3,492	8,070	6,754
Marketing and business development	7,124	5,308	12,459	10,240
Processing fees	26,572	19,338	49,812	37,781
Legal and consulting	7,059	11,265	14,344	18,176
Bankcard	8,307	5,880	15,440	12,447
Amortization of other intangible assets	2,117	1,225	4,415	2,296
Regulatory fees	6,123	3,464	11,674	6,946
Other	7,032	12,474	16,843	21,554
Total noninterest expense	240,673	214,127	477,725	428,905
Income (loss) before taxes	110,020	173,599	221,614	299,354
Income tax expense	19,910	36,043	39,067	55,835
NET INCOME	$ 90,110	$ 137,556	$ 182,547	$ 243,519
PER SHARE DATA
Net income – basic	$ 1.86	$ 2.85	$ 3.77	$ 5.03
Net income – diluted	1.85	2.83	3.75	4.99
Dividends	$ 0.38	$ 0.37	$ 0.76	$ 0.74
Weighted average shares outstanding – basic	48,514,277	48,347,226	48,474,865	48,376,868
Weighted average shares outstanding – diluted	48,668,413	48,673,964	48,707,487	48,755,059