CONSOLIDATED STATEMENTS OF INCOME (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
INTEREST INCOME:
Interest and fees on loans	$ 192,506	$ 182,394	$ 587,328	$ 505,136
Interest on securities:
Taxable	51,116	54,800	145,511	168,948
Nontaxable	5,979	6,584	18,062	18,990
Interest on federal funds sold	0	3	0	3
Interest on interest-bearing deposits in other financial institutions	4,193	1,651	10,244	4,833
TOTAL INTEREST INCOME	253,794	245,432	761,145	697,910
INTEREST EXPENSE:
Interest on deposits	82,976	92,744	247,609	231,617
Interest on borrowings	7,378	1,167	25,727	4,437
Interest on term debt (includes $(247) and $(63) of interest income related to derivatives reclassified from accumulated other comprehensive income for the three months ended September 30, 2024 and 2023, respectively, and $(457) and $638 of interest (income) expense related to derivatives reclassified from accumulated other comprehensive income for the nine months ended September 30, 2024 and 2023, respectively)	5,543	5,765	16,956	16,756
TOTAL INTEREST EXPENSE	95,897	99,676	290,292	252,810
NET INTEREST INCOME	157,897	145,756	470,853	445,100
Provision for credit losses	6,276	1,516	16,270	9,969
NET INTEREST INCOME AFTER PROVISION FOR CREDIT LOSSES	151,621	144,240	454,583	435,131
NONINTEREST INCOME:
Loan servicing income	111	278	349	1,403
Securities losses, net (includes $(9,299) and $59 of net security (losses) gains reclassified from accumulated other comprehensive income for the three months ended September 30, 2024 and 2023, respectively, and $(19,855) and $(1,370) of net security losses reclassified from accumulated other comprehensive income for the nine months ended September 30, 2024 and 2023, respectively)	(9,520)	(114)	(19,573)	(1,532)
Unrealized gain on equity securities, net	377	13	605	165
Net gains on sale of loans held for sale	0	905	104	3,786
Income on bank owned life insurance	1,107	858	3,610	3,042
Other noninterest income	1,576	619	5,289	2,489
TOTAL NONINTEREST INCOME	18,992	28,383	64,862	90,875
NONINTEREST EXPENSES:
Salaries and employee benefits	62,742	62,262	191,817	186,510
Occupancy	6,318	6,438	19,843	20,338
Furniture and equipment	2,062	2,720	6,554	8,698
Professional fees	17,448	13,616	48,351	41,607
FDIC insurance assessments	3,035	3,313	11,344	9,627
Advertising	1,937	1,633	4,663	6,670
Core deposit intangibles amortization	1,345	1,625	4,258	5,128
Other real estate and loan collection expenses	395	481	1,422	984
Loss (gain) on sales/valuations of assets, net	(26,419)	108	(26,012)	(2,149)
Acquisition, integration and restructuring costs	2,026	2,429	9,374	5,994
Partnership investment in tax credit projects	222	1,136	938	1,828
Other noninterest expenses	14,816	15,292	43,214	46,307
TOTAL NONINTEREST EXPENSES	85,927	111,053	315,766	331,542
INCOME BEFORE INCOME TAXES	84,686	61,570	203,679	194,464
Income taxes (includes $(5,729) and $9,877 of income tax (expense) benefit reclassified from accumulated other comprehensive income for the three months ended September 30, 2024 and 2023, respectively, and $5,352 and $19,253 of income tax benefit reclassified from accumulated other comprehensive income for the nine months ended September 30, 2024 and 2023, respectively)	20,533	13,479	48,077	44,181
NET INCOME	64,153	48,091	155,602	150,283
Preferred dividends	(2,013)	(2,013)	(6,038)	(6,038)
NET INCOME AVAILABLE TO COMMON STOCKHOLDERS	$ 62,140	$ 46,078	$ 149,564	$ 144,245
EARNINGS PER COMMON SHARE - BASIC (in dollars per share)	$ 1.45	$ 1.08	$ 3.49	$ 3.38
EARNINGS PER COMMON SHARE - DILUTED (in dollars per share)	1.44	1.08	3.47	3.37
CASH DIVIDENDS DECLARED PER COMMON SHARE (in dollars per share)	$ 0.30	$ 0.30	$ 0.90	$ 0.90
Reclassification out of accumulated other comprehensive income (loss) | Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent
INTEREST EXPENSE:
Interest on term debt (includes $(247) and $(63) of interest income related to derivatives reclassified from accumulated other comprehensive income for the three months ended September 30, 2024 and 2023, respectively, and $(457) and $638 of interest (income) expense related to derivatives reclassified from accumulated other comprehensive income for the nine months ended September 30, 2024 and 2023, respectively)	$ (247)	$ (63)	$ (457)	$ 638
Reclassification out of accumulated other comprehensive income (loss) | Accumulated Net Unrealized Investment Gain (Loss)
NONINTEREST INCOME:
Securities losses, net (includes $(9,299) and $59 of net security (losses) gains reclassified from accumulated other comprehensive income for the three months ended September 30, 2024 and 2023, respectively, and $(19,855) and $(1,370) of net security losses reclassified from accumulated other comprehensive income for the nine months ended September 30, 2024 and 2023, respectively)	(9,299)	59	(19,855)	(1,370)
Reclassification out of accumulated other comprehensive income (loss) | Accumulated Other Comprehensive Loss
NONINTEREST EXPENSES:
Income taxes (includes $(5,729) and $9,877 of income tax (expense) benefit reclassified from accumulated other comprehensive income for the three months ended September 30, 2024 and 2023, respectively, and $5,352 and $19,253 of income tax benefit reclassified from accumulated other comprehensive income for the nine months ended September 30, 2024 and 2023, respectively)	5,729	(9,877)	(5,352)	(19,253)
Service charges and fees
NONINTEREST INCOME:
Revenue from contract with customers	17,100	18,553	51,127	55,316
Trust fees
NONINTEREST INCOME:
Revenue from contract with customers	5,272	4,734	15,847	15,810
Brokerage and insurance commissions
NONINTEREST INCOME:
Revenue from contract with customers	853	692	2,501	2,065
Capital markets fees
NONINTEREST INCOME:
Revenue from contract with customers	$ 2,116	$ 1,845	$ 5,003	$ 8,331