CONSOLIDATED STATEMENTS OF INCOME - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Interest and dividend income:
Interest and fees on loans	$ 808,041	$ 652,095	$ 476,041
Taxable interest and dividends on securities	90,582	101,233	118,690
Non-taxable interest and dividends on securities	5,766	5,736	7,179
Interest on federal funds sold and other short-term investments	42,377	37,395	3,271
Total interest and dividend income	946,766	796,459	605,181
Interest expense:
Interest on deposits	337,367	226,075	28,621
Interest on borrowings	1,802	19,975	8,506
Total interest expense	339,169	246,050	37,127
Net interest income	607,597	550,409	568,054
Provision for allowance for loan losses	67,380	20,052	17,925
Net interest income after provision for allowance for loan losses	540,217	530,357	550,129
Noninterest income (loss):
Trust and investment advisory fees	46,126	24,264	23,593
Service charges on deposit accounts	32,004	28,631	30,392
Debit card processing fees	14,177	13,469	12,644
Interest rate swap income	2,819	1,536	6,009
Income (losses) from investments held in rabbi trusts	9,675	9,305	(10,762)
Losses on sale of commercial and industrial loans	0	(2,738)	0
(Losses) gains on sales of mortgage loans held for sale, net	(920)	(507)	248
Losses on sales of securities available for sale, net	(16,798)	(333,170)	(3,157)
Other	36,834	21,457	17,783
Total noninterest income (loss)	123,917	(237,753)	76,750
Noninterest expense:
Salaries and employee benefits	302,345	253,037	233,097
Office occupancy and equipment	46,515	35,992	37,445
Data processing	75,383	55,308	52,938
Professional services	20,073	17,385	15,805
Marketing	7,824	7,592	9,294
FDIC insurance	13,866	21,874	6,250
Amortization of other intangible assets	14,569	1,804	1,198
Other	27,793	25,610	32,622
Total noninterest expense	508,368	418,602	388,649
Income (loss) from continuing operations before income tax expense	155,766	(125,998)	238,230
Income tax expense (benefit)	36,205	(63,309)	51,719
Net income (loss) from continuing operations	119,561	(62,689)	186,511
Net income from discontinued operations	0	294,866	13,248
Net income	$ 119,561	$ 232,177	$ 199,759
Basic earnings per share
Basic earnings (loss) per share from continuing operations (in dollars per share)	$ 0.66	$ (0.39)	$ 1.13
Basic earnings per share from discontinued operations (in dollars per share)	0	1.82	0.08
Basic earnings per share (in dollars per share)	0.66	1.43	1.21
Diluted earnings per share:
Diluted earnings (loss) per share from continuing operations (in dollars per share)	0.66	(0.39)	1.13
Diluted earnings per share from discontinued operations (in dollars per share)	0	1.82	0.08
Diluted earnings per share (in dollars per share)	$ 0.66	$ 1.43	$ 1.21