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
Interest and fees on loans	$ 275,666	$ 174,643	$ 643,239	$ 522,920
Interest and dividends on investment securities
Taxable	19,221	8,745	54,009	24,600
Tax-exempt	16,538	14,613	49,025	43,141
Other interest	3,284	2,281	7,696	5,802
Total interest income	314,708	200,282	753,969	596,462
Interest expense
Interest on deposits	26,000	4,427	37,590	14,945
Interest on federal funds purchased and securities sold under agreements to repurchase	756	48	1,200	103
Interest on other short-term funding	1	8	2	21
Interest on FHLB advances	20,792	8,962	38,663	27,979
Interest on long-term funding	2,722	3,163	8,182	14,323
Total interest expense	50,270	16,607	85,637	57,371
Net interest income	264,439	183,675	668,332	539,092
Provision for credit losses	16,998	(24,010)	13,006	(82,018)
Net interest income after provision for credit losses	247,440	207,685	655,326	621,110
Noninterest income
Noninterest Income In Scope of Topic 606	49,011	53,099	152,974	158,383
Capital markets, net	7,675	7,114	24,331	20,928
Mortgage banking, net	2,098	10,657	16,635	42,710
Bank and corporate owned life insurance	1,827	2,760	8,004	8,551
Asset gains, net	18	5,228	1,883	10,024
Investment securities gains (losses), net	5,664	0	5,676	(16)
Gains on sale of branches, net(a)	0	0	0	1,038
Other	2,527	2,205	6,613	8,425
Total noninterest income	70,788	82,076	220,713	250,862
Noninterest expense
Personnel	118,243	107,880	335,720	318,900
Technology	22,694	19,927	65,401	60,902
Occupancy	13,717	15,814	43,948	46,649
Business development and advertising	6,778	6,156	17,388	15,522
Equipment	4,921	5,200	14,841	16,199
Legal and professional	4,159	4,304	14,118	17,495
Loan and foreclosure costs	1,631	1,616	5,121	6,508
FDIC assessment	5,800	5,000	16,300	13,350
Other intangible amortization	2,203	2,203	6,608	6,642
Other	15,645	9,793	31,057	25,547
Total noninterest expense	195,791	177,892	550,503	527,713
Income before income taxes	122,438	111,870	325,536	344,259
Income tax expense	26,163	23,060	68,176	70,142
Net income	96,275	88,809	257,360	274,117
Preferred stock dividends	2,875	4,155	8,625	14,236
Net income available to common equity	$ 93,400	$ 84,655	$ 248,735	$ 259,880
Earnings per common share
Basic	$ 0.62	$ 0.56	$ 1.66	$ 1.70
Diluted	$ 0.62	$ 0.56	$ 1.65	$ 1.69
Average common shares outstanding
Basic	149,321	150,046	149,063	151,473
Diluted	150,262	151,143	150,205	152,701
Wealth management fees
Noninterest income
Noninterest Income In Scope of Topic 606	$ 19,984	$ 22,110	$ 63,719	$ 67,229
Service charges and deposit account fees
Noninterest income
Noninterest Income In Scope of Topic 606	15,029	16,962	48,392	47,366
Card-based fees
Noninterest income
Noninterest Income In Scope of Topic 606	11,512	11,147	32,933	31,920
Card-based fees	11,479	11,113	32,847	31,838
Other fee-based revenue
Noninterest income
Noninterest Income In Scope of Topic 606	2,486	2,880	7,930	11,868
Card-based fees	$ 4,487	$ 3,929	$ 12,613	$ 12,769