Consolidated Statements of Income (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Interest income:
Loans, including fees	$ 369,990	$ 341,456	$ 733,283	$ 656,057
Loans held for sale	440	365	743	660
Securities-taxable	47,752	47,501	94,537	95,147
Securities-tax exempt	4,471	4,728	8,997	9,449
Short-term investments	4,892	11,223	11,669	16,563
Total interest income	427,545	405,273	849,229	777,876
Interest expense:
Deposits	144,610	102,535	292,093	166,986
Short-term borrowings	9,441	25,733	14,407	45,796
Long-term debt	3,064	3,094	6,128	6,189
Total interest expense	157,115	131,362	312,628	218,971
Net interest income	270,430	273,911	536,601	558,905
Provision for credit losses	8,723	7,633	21,691	13,653
Net interest income after provision for credit losses	261,707	266,278	514,910	545,252
Noninterest income:
Other income	13,264	12,819	26,442	24,037
Total noninterest income	89,174	83,225	177,025	163,555
Noninterest expense:
Compensation expense	97,121	94,121	193,690	186,524
Employee benefits	21,605	20,743	46,193	43,663
Personnel expense	118,726	114,864	239,883	230,187
Net occupancy expense	13,158	12,707	26,553	24,913
Equipment expense	4,312	5,043	8,540	9,779
Data processing expense	31,371	29,562	60,108	57,744
Professional services expense	9,458	8,915	18,494	18,046
Amortization of intangible assets	2,389	2,957	4,915	6,071
Deposit insurance and regulatory fees	6,008	6,463	14,939	12,383
Other real estate and foreclosed assets income, net	(1,099)	(282)	(1,295)	(127)
Other expense	21,693	21,909	41,601	44,026
Total noninterest expense	206,016	202,138	413,738	403,022
Income before income taxes	144,865	147,365	278,197	305,785
Income taxes expense	30,308	29,571	55,028	61,524
Net income	$ 114,557	$ 117,794	$ 223,169	$ 244,261
Earnings per common share-basic	$ 1.31	$ 1.35	$ 2.56	$ 2.81
Earnings per common share-diluted	1.31	1.35	2.55	2.80
Dividends paid per share	$ 0.40	$ 0.30	$ 0.70	$ 0.60
Weighted average shares outstanding-basic	86,510	86,096	86,515	86,057
Weighted average shares outstanding-diluted	86,765	86,370	86,768	86,350
Service charges on deposit accounts
Noninterest income:
Service charges on deposit accounts	$ 22,275	$ 21,491	$ 44,514	$ 42,113
Trust fees
Noninterest income:
Service charges on deposit accounts	18,473	17,393	35,550	34,127
Bank card and ATM fees
Noninterest income:
Service charges on deposit accounts	21,827	20,982	42,449	41,703
Investment and annuity fees and insurance commissions
Noninterest income:
Service charges on deposit accounts	9,789	8,241	21,633	17,108
Secondary mortgage market operations
Noninterest income:
Service charges on deposit accounts	$ 3,546	$ 2,299	$ 6,437	$ 4,467