Condensed Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Interest income:
Loans	$ 170,159	$ 102,153	$ 322,765	$ 198,276
Debt securities:
Taxable	9,619	6,553	18,905	11,904
Nontaxable	5,659	4,526	11,256	8,468
Interest-earning deposits	2,095	2,495	3,290	3,312
Dividends on equity securities	365	342	714	690
Total interest income	187,897	116,069	356,930	222,650
Interest expense:
Deposits	41,372	3,850	66,033	6,709
Subordinated debentures and notes	2,431	2,257	4,840	4,477
FHLB advances	1,279	197	2,611	392
Other borrowings	2,123	152	3,225	294
Total interest expense	47,205	6,456	76,709	11,872
Net interest income	140,692	109,613	280,221	210,778
Provision (benefit) for credit losses	6,339	658	10,522	(3,410)
Net interest income after provision (benefit) for credit losses	134,353	108,955	269,699	214,188
Noninterest income:
Total noninterest income	14,290	14,194	31,188	32,835
Noninterest expense:
Employee compensation and benefits	41,641	36,028	84,144	71,855
Occupancy	3,954	4,309	8,015	8,895
Data processing	3,661	3,111	7,371	6,371
Professional fees	1,566	1,542	3,197	2,719
Other expense	35,134	20,434	64,212	38,384
Total noninterest expense	85,956	65,424	166,939	128,224
Income before income tax expense	62,687	57,725	133,948	118,799
Income tax expense	13,560	12,576	29,083	25,957
Net income	49,127	45,149	104,865	92,842
Dividends on preferred stock	937	938	1,875	2,167
Net income available to common shareholders	$ 48,190	$ 44,211	$ 102,990	$ 90,675
Earnings per common share
Basic (usd per share)	$ 1.29	$ 1.19	$ 2.76	$ 2.42
Diluted (usd per share)	$ 1.29	$ 1.19	$ 2.75	$ 2.41
Deposit service charges
Noninterest income:
Total noninterest income	$ 3,910	$ 4,749	$ 8,038	$ 8,912
Wealth management revenue
Noninterest income:
Total noninterest income	2,472	2,533	4,988	5,155
Card services revenue
Noninterest income:
Total noninterest income	2,464	3,514	4,802	6,554
Tax credit income
Noninterest income:
Total noninterest income	368	1,186	2,181	3,794
Other income
Noninterest income:
Total noninterest income	$ 5,076	$ 2,212	$ 11,179	$ 8,420