CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Interest income:
Loans, including fees	$ 478,448	$ 369,323	$ 1,230,847	$ 1,113,102
Investment securities available for sale	53,550	35,876	151,111	98,631
Loans held for sale	12,017	5,540	26,798	18,611
Federal Reserve Bank balances	5,584	1,214	7,965	2,597
Other earning assets	1,700	551	4,412	2,123
Total interest income	551,299	412,504	1,421,133	1,235,064
Interest expense:
Deposits	46,917	16,086	79,077	60,475
Long-term debt	22,156	11,465	41,069	33,851
Other borrowings	4,307	36	5,432	104
Total interest expense	73,380	27,587	125,578	94,430
Net interest income	477,919	384,917	1,295,555	1,140,634
Provision for (reversal of) credit losses	25,581	(7,868)	49,669	(51,041)
Net interest income after provision for (reversal of) credit losses	452,338	392,785	1,245,886	1,191,675
Non-interest revenue:
Service charges on deposit accounts	23,398	22,641	69,428	64,089
Fiduciary and asset management fees	19,201	19,786	59,577	56,545
Card fees	15,101	13,238	45,946	38,538
Brokerage revenue	17,140	14,745	47,038	41,644
Mortgage banking income	5,065	11,155	14,922	47,312
Capital markets income	6,839	8,089	19,704	18,929
Income from bank-owned life insurance	6,792	6,820	22,514	22,851
Investment securities gains (losses), net	0	962	0	(1,028)
Other non-interest revenue	10,762	17,519	27,768	44,117
Total non-interest revenue	104,298	114,955	306,897	332,997
Non-interest expense:
Salaries and other personnel expense	173,334	160,364	499,081	482,408
Net occupancy, equipment, and software expense	43,462	43,483	129,538	126,442
Third-party processing and other services	22,539	19,446	65,486	63,897
Professional fees	6,755	6,739	26,094	23,771
FDIC insurance and other regulatory fees	7,707	5,212	20,851	16,338
Restructuring charges	956	319	(7,318)	1,265
Other operating expense	39,257	31,469	114,779	90,576
Total non-interest expense	294,010	267,032	848,511	804,697
Income before income taxes	262,626	240,708	704,272	719,975
Income tax expense	59,582	53,935	152,140	159,910
Net income	203,044	186,773	552,132	560,065
Less: Preferred stock dividends	8,291	8,291	24,872	24,872
Net income available to common shareholders	$ 194,753	$ 178,482	$ 527,260	$ 535,193
Net income per common share, basic (in dollars per share)	$ 1.34	$ 1.22	$ 3.63	$ 3.63
Net income per common share, diluted (in dollars per share)	$ 1.33	$ 1.21	$ 3.60	$ 3.59
Weighted average common shares outstanding, basic (in shares)	145,386	146,308	145,329	147,622
Weighted average common shares outstanding, diluted (in shares)	146,418	147,701	146,465	149,069