LOANS AND ALLOWANCE FOR CREDIT LOSSES - Loans by Risk Grade (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025	Dec. 31, 2025
Accounts, Notes, Loans and Financing Receivable [Line Items]
Year one	$ 1,586,351		$ 4,535,246
Year two	3,727,543		1,587,729
Year three	1,526,367		1,450,107
Year four	1,381,102		4,547,014
Year five	4,437,206		3,256,430
Prior	6,660,530		3,707,440
Revolving Loans Amortized Cost Basis	2,508,881		2,429,556
Loans, net of unearned income	21,827,980		21,513,522
Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Year one	1,585,492		4,511,129
Year two	3,697,258		1,572,655
Year three	1,504,649		1,434,259
Year four	1,364,411		4,496,390
Year five	4,373,118		3,225,289
Prior	6,575,101		3,646,267
Revolving Loans Amortized Cost Basis	2,498,646		2,419,756
Loans, net of unearned income	21,598,675		21,305,745
Special mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Year one	331		957
Year two	2,752		484
Year three	1,581		19
Year four	413		9,013
Year five	18,422		17,022
Prior	24,484		11,077
Revolving Loans Amortized Cost Basis	1,376		1,137
Loans, net of unearned income	49,359		39,709
Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Year one	528		23,160
Year two	27,533		14,590
Year three	20,137		15,829
Year four	16,278		41,611
Year five	45,666		14,119
Prior	60,945		50,096
Revolving Loans Amortized Cost Basis	8,859		8,663
Loans, net of unearned income	179,946		168,068
Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Year one	361,037		936,605
Year two	805,275		649,571
Year three	590,391		409,161
Year four	382,928		378,249
Year five	364,829		155,302
Prior	211,596		78,288
Revolving Loans Amortized Cost Basis	684,781		681,329
Loans, net of unearned income	3,400,837		3,288,505
Current-period gross charge offs, year one	234	$ 118
Current-period gross charge offs, year two	1,711	2,348
Current-period gross charge offs, year three	2,861	3,523
Current-period gross charge offs, year four	2,897	4,376
Current-period gross charge offs, year five	2,084	1,303
Current-period gross charge offs, prior	634	191
Current-period gross charge offs, revolving loans amortized cost basis	167	0
Current-period gross charge offs	10,588	11,859
Commercial and industrial | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Year one	360,186		934,457
Year two	803,281		644,695
Year three	585,615		403,869
Year four	378,611		375,741
Year five	363,581		151,316
Prior	206,596		74,208
Revolving Loans Amortized Cost Basis	683,400		679,681
Loans, net of unearned income	3,381,270		3,263,967
Commercial and industrial | Special mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Year one	331		957
Year two	834		470
Year three	442		19
Year four	157		835
Year five	144		1,143
Prior	291		1,294
Revolving Loans Amortized Cost Basis	384		384
Loans, net of unearned income	2,583		5,102
Commercial and industrial | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Year one	520		1,191
Year two	1,160		4,406
Year three	4,334		5,273
Year four	4,160		1,673
Year five	1,104		2,843
Prior	4,709		2,786
Revolving Loans Amortized Cost Basis	997		1,264
Loans, net of unearned income	16,984		19,436
Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Year one	30,965		58,398
Year two	21,158		12,332
Year three	10,121		9,248
Year four	7,663		3,711
Year five	3,188		927
Prior	26,670		29,240
Revolving Loans Amortized Cost Basis	66,887		66,154
Loans, net of unearned income	166,652		180,010
Current-period gross charge offs, year one	0	0
Current-period gross charge offs, year two	3,679	158
Current-period gross charge offs, year three	602	154
Current-period gross charge offs, year four	78	57
Current-period gross charge offs, year five	73	22
Current-period gross charge offs, prior	319	549
Current-period gross charge offs, revolving loans amortized cost basis	64	0
Current-period gross charge offs	4,815	940
Consumer | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Year one	30,965		58,282
Year two	21,011		12,126
Year three	10,048		9,095
Year four	7,573		3,652
Year five	3,124		908
Prior	26,156		28,711
Revolving Loans Amortized Cost Basis	66,799		66,097
Loans, net of unearned income	165,676		178,871
Consumer | Special mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Year one	0		0
Year two	0		14
Year three	0		0
Year four	0		9
Year five	8		0
Prior	16		19
Revolving Loans Amortized Cost Basis	0		0
Loans, net of unearned income	24		42
Consumer | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Year one	0		116
Year two	147		192
Year three	73		153
Year four	90		50
Year five	56		19
Prior	498		510
Revolving Loans Amortized Cost Basis	88		57
Loans, net of unearned income	952		1,097
Mortgage warehouse
Accounts, Notes, Loans and Financing Receivable [Line Items]
Year one	0		0
Year two	0		0
Year three	0		0
Year four	0		0
Year five	0		0
Prior	0		0
Revolving Loans Amortized Cost Basis	1,232,103		1,150,782
Loans, net of unearned income	1,232,103		1,150,782
Current-period gross charge offs, year one	0	0
Current-period gross charge offs, year two	0	0
Current-period gross charge offs, year three	0	0
Current-period gross charge offs, year four	0	0
Current-period gross charge offs, year five	0	0
Current-period gross charge offs, prior	0	0
Current-period gross charge offs, revolving loans amortized cost basis	0	0
Current-period gross charge offs	0	0
Mortgage warehouse | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Year one	0		0
Year two	0		0
Year three	0		0
Year four	0		0
Year five	0		0
Prior	0		0
Revolving Loans Amortized Cost Basis	1,232,103		1,150,782
Loans, net of unearned income	1,232,103		1,150,782
Municipal
Accounts, Notes, Loans and Financing Receivable [Line Items]
Year one	3,061		26,343
Year two	25,473		30,899
Year three	31,210		8,708
Year four	8,649		42,797
Year five	42,597		34,928
Prior	308,966		289,740
Revolving Loans Amortized Cost Basis	819		819
Loans, net of unearned income	420,775		434,234
Current-period gross charge offs, year one	0	0
Current-period gross charge offs, year two	0	0
Current-period gross charge offs, year three	0	0
Current-period gross charge offs, year four	0	0
Current-period gross charge offs, year five	0	0
Current-period gross charge offs, prior	0	0
Current-period gross charge offs, revolving loans amortized cost basis	0	0
Current-period gross charge offs	0	0
Municipal | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Year one	3,061		26,343
Year two	25,473		30,899
Year three	31,210		8,708
Year four	8,649		42,797
Year five	42,597		34,928
Prior	308,966		289,740
Revolving Loans Amortized Cost Basis	819		819
Loans, net of unearned income	420,775		434,234
Premium finance
Accounts, Notes, Loans and Financing Receivable [Line Items]
Year one	680,719		1,286,187
Year two	672,811		19,853
Year three	11,454		227
Year four	34		0
Year five	0		0
Prior	0		0
Revolving Loans Amortized Cost Basis	0		0
Loans, net of unearned income	1,365,018		1,306,267
Current-period gross charge offs, year one	0	2
Current-period gross charge offs, year two	1,802	2,145
Current-period gross charge offs, year three	260	181
Current-period gross charge offs, year four	0	1
Current-period gross charge offs, year five	0	0
Current-period gross charge offs, prior	0	0
Current-period gross charge offs, revolving loans amortized cost basis	0	0
Current-period gross charge offs	2,062	2,329
Premium finance | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Year one	680,711		1,278,242
Year two	664,737		19,305
Year three	11,369		227
Year four	34		0
Year five	0		0
Prior	0		0
Revolving Loans Amortized Cost Basis	0		0
Loans, net of unearned income	1,356,851		1,297,774
Premium finance | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Year one	8		7,945
Year two	8,074		548
Year three	85		0
Year four	0		0
Year five	0		0
Prior	0		0
Revolving Loans Amortized Cost Basis	0		0
Loans, net of unearned income	8,167		8,493
Real estate – construction and development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Year one	104,740		639,978
Year two	653,044		385,267
Year three	404,259		38,191
Year four	35,491		184,257
Year five	147,772		98,296
Prior	137,119		44,437
Revolving Loans Amortized Cost Basis	81,817		78,824
Loans, net of unearned income	1,564,242		1,469,250
Current-period gross charge offs, year one	0	0
Current-period gross charge offs, year two	0	0
Current-period gross charge offs, year three	0	0
Current-period gross charge offs, year four	0	0
Current-period gross charge offs, year five	0	0
Current-period gross charge offs, prior	0	0
Current-period gross charge offs, revolving loans amortized cost basis	0	0
Current-period gross charge offs	0	0
Real estate – construction and development | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Year one	104,740		639,978
Year two	651,539		384,683
Year three	402,861		38,088
Year four	35,160		183,595
Year five	147,040		97,961
Prior	134,435		42,251
Revolving Loans Amortized Cost Basis	81,817		78,824
Loans, net of unearned income	1,557,592		1,465,380
Real estate – construction and development | Special mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Year one	0		0
Year two	1,505		0
Year three	1,139		0
Year four	256		150
Year five	0		0
Prior	217		240
Revolving Loans Amortized Cost Basis	0		0
Loans, net of unearned income	3,117		390
Real estate – construction and development | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Year one	0		0
Year two	0		584
Year three	259		103
Year four	75		512
Year five	732		335
Prior	2,467		1,946
Revolving Loans Amortized Cost Basis	0		0
Loans, net of unearned income	3,533		3,480
Real estate – commercial and farmland
Accounts, Notes, Loans and Financing Receivable [Line Items]
Year one	341,598		1,353,318
Year two	1,334,407		324,879
Year three	319,222		438,595
Year four	427,473		2,756,398
Year five	2,736,796		1,992,550
Prior	4,126,331		2,344,930
Revolving Loans Amortized Cost Basis	79,058		100,735
Loans, net of unearned income	9,364,885		9,311,405
Current-period gross charge offs, year one	0	0
Current-period gross charge offs, year two	0	0
Current-period gross charge offs, year three	0	0
Current-period gross charge offs, year four	0	0
Current-period gross charge offs, year five	0	0
Current-period gross charge offs, prior	0	0
Current-period gross charge offs, revolving loans amortized cost basis	0	0
Current-period gross charge offs	0	0
Real estate – commercial and farmland | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Year one	341,598		1,344,318
Year two	1,324,994		324,535
Year three	318,825		437,240
Year four	426,209		2,731,134
Year five	2,695,171		1,974,974
Prior	4,090,174		2,321,409
Revolving Loans Amortized Cost Basis	78,958		100,635
Loans, net of unearned income	9,275,929		9,234,245
Real estate – commercial and farmland | Special mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Year one	0		0
Year two	413		0
Year three	0		0
Year four	0		7,972
Year five	18,225		15,851
Prior	22,809		8,411
Revolving Loans Amortized Cost Basis	0		0
Loans, net of unearned income	41,447		32,234
Real estate – commercial and farmland | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Year one	0		9,000
Year two	9,000		344
Year three	397		1,355
Year four	1,264		17,292
Year five	23,400		1,725
Prior	13,348		15,110
Revolving Loans Amortized Cost Basis	100		100
Loans, net of unearned income	47,509		44,926
Real estate – residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Year one	64,231		234,417
Year two	215,375		164,928
Year three	159,710		545,977
Year four	518,864		1,181,602
Year five	1,142,024		974,427
Prior	1,849,848		920,805
Revolving Loans Amortized Cost Basis	363,416		350,913
Loans, net of unearned income	4,313,468		4,373,069
Current-period gross charge offs, year one	0	0
Current-period gross charge offs, year two	0	0
Current-period gross charge offs, year three	0	110
Current-period gross charge offs, year four	0	0
Current-period gross charge offs, year five	62	0
Current-period gross charge offs, prior	0	146
Current-period gross charge offs, revolving loans amortized cost basis	0	0
Current-period gross charge offs	62	256
Real estate – residential | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Year one	64,231		229,509
Year two	206,223		156,412
Year three	144,721		537,032
Year four	508,175		1,159,471
Year five	1,121,605		965,202
Prior	1,808,774		889,948
Revolving Loans Amortized Cost Basis	354,750		342,918
Loans, net of unearned income	4,208,479		4,280,492
Real estate – residential | Special mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Year one	0		0
Year two	0		0
Year three	0		0
Year four	0		47
Year five	45		28
Prior	1,151		1,113
Revolving Loans Amortized Cost Basis	992		753
Loans, net of unearned income	2,188		1,941
Real estate – residential | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Year one	0		4,908
Year two	9,152		8,516
Year three	14,989		8,945
Year four	10,689		22,084
Year five	20,374		9,197
Prior	39,923		29,744
Revolving Loans Amortized Cost Basis	7,674		7,242
Loans, net of unearned income	102,801		$ 90,636
Total Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current-period gross charge offs, year one	234	120
Current-period gross charge offs, year two	7,192	4,651
Current-period gross charge offs, year three	3,723	3,968
Current-period gross charge offs, year four	2,975	4,434
Current-period gross charge offs, year five	2,219	1,325
Current-period gross charge offs, prior	953	886
Current-period gross charge offs, revolving loans amortized cost basis	231	0
Current-period gross charge offs	$ 17,527	$ 15,384