CONSOLIDATED STATEMENTS OF INCOME (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Interest income:
Loans, including fees	$ 431,902	$ 227,047
Securities:
Taxable	29,358	11,048
Tax-exempt	23,802	17,446
Federal funds sold and other	20,977	3,076
Total interest income	506,039	258,617
Interest expense:
Deposits	176,589	10,250
Securities sold under agreements to repurchase	595	56
Federal Home Loan Bank advances and other borrowings	16,624	8,836
Total interest expense	193,808	19,142
Net interest income	312,231	239,475
Provision for credit losses	18,767	2,720
Net interest income after provision for credit losses	293,464	236,755
Noninterest income:
Total noninterest income	89,529	103,496
Noninterest expense:
Salaries and employee benefits	135,708	121,852
Equipment and occupancy	30,353	25,536
Other real estate expense, net	99	105
Marketing and other business development	5,942	3,777
Postage and supplies	2,819	2,371
Amortization of intangibles	1,794	1,871
Other noninterest expense	35,012	27,149
Total noninterest expense	211,727	182,661
Income before income taxes	171,266	157,590
Income tax expense	33,995	28,480
Net income	137,271	129,110
Preferred stock dividends	(3,798)	(3,798)
Net income available to common shareholders	$ 133,473	$ 125,312
Per share information:
Basic net income per common share	$ 1.76	$ 1.66
Diluted net income per common share	$ 1.76	$ 1.65
Weighted average common shares outstanding:
Basic	75,921,282	75,654,986
Diluted	76,042,328	75,930,372
Service charges on deposit accounts
Noninterest income:
Total noninterest income	$ 11,718	$ 11,030
Investment services
Noninterest income:
Total noninterest income	11,595	10,691
Insurance sales commissions
Noninterest income:
Total noninterest income	4,464	4,036
Gain on mortgage loans sold, net
Noninterest income:
Total noninterest income	2,053	4,066
Investment losses on sales, net
Noninterest income:
Total noninterest income	0	(61)
Trust fees
Noninterest income:
Total noninterest income	6,429	5,973
Income from equity method investment
Noninterest income:
Total noninterest income	19,079	33,655
Other noninterest income
Noninterest income:
Total noninterest income	$ 34,191	$ 34,106