Consolidated Statements of Income (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Interest income:
Loans, including fees	$ 314,601	$ 192,750
Loans held for sale	295	691
Securities-taxable	47,646	37,164
Securities-tax exempt	4,721	4,655
Short-term investments	5,340	1,526
Total interest income	372,603	236,786
Interest expense:
Deposits	64,451	3,778
Short-term borrowings	20,063	1,419
Long-term debt	3,095	3,126
Total interest expense	87,609	8,323
Net interest income	284,994	228,463
Provision for credit losses	6,020	(22,527)
Net interest income after provision for credit losses	278,974	250,990
Noninterest income:
Securities transactions, net		(87)
Other income	11,218	14,997
Total noninterest income	80,330	83,432
Noninterest expense:
Compensation expense	92,403	85,993
Employee benefits	22,920	21,403
Personnel expense	115,323	107,396
Net occupancy expense	12,206	11,680
Equipment expense	4,736	4,867
Data processing expense	28,182	24,239
Professional services expense	9,131	7,793
Amortization of intangible assets	3,114	3,748
Deposit insurance and regulatory fees	5,920	3,740
Other real estate and foreclosed assets expense (income), net	155	(1,764)
Other expense	22,117	18,240
Total noninterest expense	200,884	179,939
Income before income taxes	158,420	154,483
Income taxes expense	31,953	31,005
Net income	$ 126,467	$ 123,478
Earnings per common share-basic	$ 1.45	$ 1.40
Earnings per common share-diluted	1.45	1.40
Dividends paid per share	$ 0.30	$ 0.27
Weighted average shares outstanding-basic	86,018	86,660
Weighted average shares outstanding-diluted	86,282	86,936
Service charges on deposit accounts
Noninterest income:
Service charges on deposit accounts	$ 20,622	$ 21,674
Trust fees
Noninterest income:
Service charges on deposit accounts	16,734	15,279
Bank card and ATM fees
Noninterest income:
Service charges on deposit accounts	20,721	20,396
Investment and annuity fees and insurance commissions
Noninterest income:
Service charges on deposit accounts	8,867	7,427
Secondary mortgage market operations
Noninterest income:
Service charges on deposit accounts	$ 2,168	$ 3,746