Condensed Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Interest income:
Loans	$ 180,241	$ 118,465	$ 503,006	$ 316,741
Debt securities:
Taxable	10,141	7,766	29,046	19,670
Nontaxable	5,700	4,976	16,956	13,444
Interest-earning deposits	4,509	4,190	7,799	7,502
Dividends on equity securities	315	298	1,029	988
Total interest income	200,906	135,695	557,836	358,345
Interest expense:
Deposits	55,354	8,687	121,387	15,396
Subordinated debentures and notes	2,466	2,313	7,306	6,790
FHLB advances	141	103	2,752	495
Other borrowings	1,306	302	4,531	596
Total interest expense	59,267	11,405	135,976	23,277
Net interest income	141,639	124,290	421,860	335,068
Provision (benefit) for credit losses	8,030	676	18,552	(2,734)
Net interest income after provision (benefit) for credit losses	133,609	123,614	403,308	337,802
Noninterest income:
Total noninterest income	12,085	9,454	43,273	42,289
Noninterest expense:
Employee compensation and benefits	40,771	36,999	124,915	108,854
Occupancy	4,198	4,497	12,213	13,392
Data processing	3,830	3,543	11,201	9,914
Professional fees	1,407	1,597	4,604	4,316
Other expense	38,438	22,207	102,650	60,591
Total noninterest expense	88,644	68,843	255,583	197,067
Income before income tax expense	57,050	64,225	190,998	183,024
Income tax expense	12,385	14,025	41,468	39,982
Net income	44,665	50,200	149,530	143,042
Dividends on preferred stock	938	937	2,813	3,104
Net income available to common shareholders	$ 43,727	$ 49,263	$ 146,717	$ 139,938
Earnings per common share
Basic (usd per share)	$ 1.17	$ 1.32	$ 3.93	$ 3.74
Diluted (usd per share)	$ 1.17	$ 1.32	$ 3.91	$ 3.73
Deposit service charges
Noninterest income:
Total noninterest income	$ 4,187	$ 4,951	$ 12,225	$ 13,863
Wealth management revenue
Noninterest income:
Total noninterest income	2,614	2,432	7,602	7,587
Card services revenue
Noninterest income:
Total noninterest income	2,560	2,652	7,362	9,206
Tax credit income (loss)
Noninterest income:
Total noninterest income	(2,673)	(3,625)	(492)	169
Other income
Noninterest income:
Total noninterest income	$ 5,397	$ 3,044	$ 16,576	$ 11,464