Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Interest income
Interest and fees on loans	$ 447,912	$ 275,666	$ 1,262,538	$ 643,239
Interest and dividends on investment securities
Taxable	38,210	19,221	104,197	54,009
Tax-exempt	15,941	16,538	47,960	49,025
Other interest	6,575	3,284	17,990	7,696
Total interest income	508,637	314,708	1,432,685	753,969
Interest expense
Interest on deposits	193,131	26,000	464,749	37,590
Interest on federal funds purchased and securities sold under agreements to repurchase	3,100	756	8,504	1,200
Interest on other short-term funding	0	1	1	2
Interest on FHLB advances	48,143	20,792	147,365	38,663
Interest on long-term funding	10,019	2,722	25,895	8,182
Total interest expense	254,394	50,270	646,514	85,637
Net interest income	254,244	264,439	786,171	668,332
Provision for credit losses	21,943	16,998	62,014	13,006
Net interest income after provision for credit losses	232,301	247,440	724,157	655,326
Noninterest income
Capital markets, net	5,368	7,675	15,544	24,331
Mortgage banking, net	6,501	2,098	17,814	16,635
Bank and corporate owned life insurance	2,047	1,827	6,882	8,004
Asset gains, net	625	18	590	1,883
Investment securities gains (losses), net	(11)	5,664	55	5,676
Other	2,339	2,527	6,841	6,613
Noninterest Income, Total	66,579	70,788	194,195	220,713
Noninterest expense
Personnel	117,159	118,243	347,669	335,720
Technology	26,172	22,694	73,990	65,401
Occupancy	14,125	13,717	42,775	43,948
Business development and advertising	7,100	6,778	20,054	17,388
Equipment	5,016	4,921	14,921	14,841
Legal and professional	4,461	4,159	13,149	14,118
Loan and foreclosure costs	2,049	1,631	4,822	5,121
FDIC assessment	9,150	5,800	25,575	16,300
Other intangible amortization	2,203	2,203	6,608	6,608
Other	8,771	15,645	24,726	31,057
Total noninterest expense	196,205	195,791	574,291	550,503
Income before income taxes	102,674	122,438	344,061	325,536
Income tax expense	19,426	26,163	70,299	68,176
Net income	83,248	96,275	273,762	257,360
Preferred stock dividends	2,875	2,875	8,625	8,625
Net income available to common equity	$ 80,373	$ 93,400	$ 265,137	$ 248,735
Earnings per common share
Basic	$ 0.53	$ 0.62	$ 1.76	$ 1.66
Diluted	$ 0.53	$ 0.62	$ 1.75	$ 1.65
Average common shares outstanding
Basic	150,035	149,321	149,929	149,063
Diluted	151,014	150,262	150,971	150,205
Wealth management fees
Noninterest income
Noninterest Income In Scope of Topic 606	$ 20,828	$ 19,984	$ 61,499	$ 63,719
Service charges and deposit account fees
Noninterest income
Noninterest Income In Scope of Topic 606	12,864	15,029	38,230	48,392
Card-based fees
Noninterest income
Card-based fees	11,510	11,479	33,492	32,847
Other fee-based revenue
Noninterest income
Card-based fees	$ 4,509	$ 4,487	$ 13,249	$ 12,613