Consolidated Statements of Income (unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Loans including fees:
Taxable	$ 658,508	$ 545,622	$ 1,174,274	$ 1,032,983
Nontaxable	16,590	13,243	26,767	26,345
Investment securities:
Taxable	124,880	82,755	210,414	157,782
Nontaxable	10,192	10,732	20,299	21,238
Money market and other interest-earning investments	14,791	11,311	23,606	21,296
Total interest income	824,961	663,663	1,455,360	1,259,644
Interest Expense
Deposits	240,088	215,806	430,583	401,245
Federal funds purchased and interbank borrowings	953	1,986	2,578	2,947
Securities sold under agreements to repurchase	636	639	1,187	1,556
Federal Home Loan Bank advances	59,042	44,643	100,938	85,810
Other borrowings	9,452	12,168	17,641	23,207
Total interest expense	310,171	275,242	552,927	514,765
Net interest income	514,790	388,421	902,433	744,879
Provision for credit losses	106,835	36,214	138,238	55,105
Net interest income after provision for credit losses	407,955	352,207	764,195	689,774
Noninterest Income
Wealth and investment services fees	35,817	29,358	65,465	57,662
Service charges on deposit accounts	23,878	19,350	45,034	37,248
Debit card and ATM fees	12,922	10,993	22,913	21,047
Mortgage banking revenue	10,032	7,064	16,911	11,542
Capital markets income	7,114	4,729	11,620	7,629
Company-owned life insurance	6,625	5,739	12,006	9,173
Debt securities gains (losses), net	(41)	2	(117)	(14)
Other income	36,170	10,036	52,479	20,506
Total noninterest income	132,517	87,271	226,311	164,793
Noninterest Expense
Salaries and employee benefits	202,112	159,193	350,417	308,996
Occupancy	30,432	26,547	59,485	53,566
Equipment	12,566	8,704	21,467	17,375
Marketing	13,759	11,284	25,699	21,918
Technology	31,452	24,002	53,472	44,025
Communication	5,014	4,480	9,148	8,480
Professional fees	21,931	10,552	29,850	16,958
FDIC assessment	13,409	9,676	23,109	20,989
Amortization of intangibles	19,630	7,425	26,460	12,880
Amortization of tax credit investments	5,815	2,747	9,239	5,496
Other expense	28,646	18,389	44,891	34,633
Total noninterest expense	384,766	282,999	653,237	545,316
Income before income taxes	155,706	156,479	337,269	309,251
Income tax expense	30,298	35,250	67,202	67,738
Net income	125,408	121,229	270,067	241,513
Preferred dividends	(4,033)	(4,033)	(8,067)	(8,067)
Net income applicable to common shareholders	$ 121,375	$ 117,196	$ 262,000	$ 233,446
Net income per common share - basic (in dollars per share)	$ 0.34	$ 0.37	$ 0.78	$ 0.77
Net income per common share - diluted (in dollars per share)	$ 0.34	$ 0.37	$ 0.77	$ 0.77
Weighted average number of common shares outstanding - basic (in shares)	360,155	315,585	338,162	303,283
Weighted average number of common shares outstanding - diluted (in shares)	361,436	316,461	340,250	304,207
Dividends per common share (in dollars per share)	$ 0.14	$ 0.14	$ 0.28	$ 0.28