LOANS AND ALLOWANCE FOR CREDIT LOSSES - Loans by Risk Grade (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2025	Dec. 31, 2024
Accounts, Notes, Loans and Financing Receivable [Line Items]
Year one	$ 1,262,629	$ 3,203,649
Year two	2,445,839	1,968,435
Year three	1,850,666	5,121,279
Year four	5,127,551	3,786,856
Year five	3,683,139	1,723,882
Prior	4,359,003	2,881,894
Revolving Loans Amortized Cost Basis	1,977,817	2,053,911
Loans, net of unearned income	20,706,644	20,739,906
Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Year one	1,262,452	3,187,032
Year two	2,431,768	1,953,912
Year three	1,832,087	5,077,541
Year four	5,082,320	3,749,273
Year five	3,643,069	1,684,066
Prior	4,255,015	2,771,358
Revolving Loans Amortized Cost Basis	1,961,785	2,034,158
Loans, net of unearned income	20,468,496	20,457,340
Special mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Year one	162	900
Year two	904	38
Year three	1,243	5,233
Year four	6,515	16,236
Year five	18,483	15,649
Prior	44,931	68,388
Revolving Loans Amortized Cost Basis	1,545	4,492
Loans, net of unearned income	73,783	110,936
Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Year one	15	15,717
Year two	13,167	14,485
Year three	17,336	38,505
Year four	38,716	21,347
Year five	21,587	24,167
Prior	59,057	42,148
Revolving Loans Amortized Cost Basis	14,487	15,261
Loans, net of unearned income	164,365	171,630
Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Year one	345,711	921,078
Year two	808,555	596,727
Year three	554,307	529,835
Year four	504,183	254,569
Year five	235,238	73,829
Prior	107,087	53,873
Revolving Loans Amortized Cost Basis	520,890	523,224
Loans, net of unearned income	3,075,971	2,953,135
Current-period gross charge offs, year one	118
Current-period gross charge offs, year two	2,348
Current-period gross charge offs, year three	3,523
Current-period gross charge offs, year four	4,376
Current-period gross charge offs, year five	1,303
Current-period gross charge offs, prior	191
Current-period gross charge offs, revolving loans amortized cost basis	0
Current-period gross charge offs	11,859
Commercial and industrial | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Year one	345,549	919,301
Year two	806,864	594,485
Year three	552,584	523,513
Year four	498,712	246,036
Year five	226,602	72,397
Prior	100,128	46,358
Revolving Loans Amortized Cost Basis	514,453	512,778
Loans, net of unearned income	3,044,892	2,914,868
Commercial and industrial | Special mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Year one	162	892
Year two	896	28
Year three	26	1,938
Year four	1,554	1,311
Year five	2,137	777
Prior	1,490	2,960
Revolving Loans Amortized Cost Basis	103	3,319
Loans, net of unearned income	6,368	11,225
Commercial and industrial | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Year one	0	885
Year two	795	2,214
Year three	1,697	4,384
Year four	3,917	7,222
Year five	6,499	655
Prior	5,469	4,555
Revolving Loans Amortized Cost Basis	6,334	7,127
Loans, net of unearned income	24,711	27,042
Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Year one	45,762	58,234
Year two	20,749	18,781
Year three	16,236	8,779
Year four	7,224	2,419
Year five	1,931	17,593
Prior	42,802	32,671
Revolving Loans Amortized Cost Basis	79,198	83,258
Loans, net of unearned income	213,902	221,735
Current-period gross charge offs, year one	0
Current-period gross charge offs, year two	158
Current-period gross charge offs, year three	154
Current-period gross charge offs, year four	57
Current-period gross charge offs, year five	22
Current-period gross charge offs, prior	549
Current-period gross charge offs, revolving loans amortized cost basis	0
Current-period gross charge offs	940
Consumer | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Year one	45,757	58,113
Year two	20,529	18,575
Year three	16,044	8,684
Year four	7,138	2,371
Year five	1,875	17,405
Prior	41,959	31,962
Revolving Loans Amortized Cost Basis	79,059	83,143
Loans, net of unearned income	212,361	220,253
Consumer | Special mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Year one	0	8
Year two	8	0
Year three	0	14
Year four	12	0
Year five	0	9
Prior	63	61
Revolving Loans Amortized Cost Basis	0	0
Loans, net of unearned income	83	92
Consumer | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Year one	5	113
Year two	212	206
Year three	192	81
Year four	74	48
Year five	56	179
Prior	780	648
Revolving Loans Amortized Cost Basis	139	115
Loans, net of unearned income	1,458	1,390
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	891,412	965,053
Loans, net of unearned income	891,412	965,053
Current-period gross charge offs, year one	0
Current-period gross charge offs, year two	0
Current-period gross charge offs, year three	0
Current-period gross charge offs, year four	0
Current-period gross charge offs, year five	0
Current-period gross charge offs, prior	0
Current-period gross charge offs, revolving loans amortized cost basis	0
Current-period gross charge offs	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	890,508	965,053
Loans, net of unearned income	890,508	965,053
Mortgage warehouse | Special mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Year one	0
Year two	0
Year three	0
Year four	0
Year five	0
Prior	0
Revolving Loans Amortized Cost Basis	904
Loans, net of unearned income	904
Municipal
Accounts, Notes, Loans and Financing Receivable [Line Items]
Year one	1,508	20,133
Year two	18,158	9,094
Year three	9,039	44,482
Year four	44,286	36,468
Year five	36,341	139,046
Prior	319,269	191,559
Revolving Loans Amortized Cost Basis	626	626
Loans, net of unearned income	429,227	441,408
Current-period gross charge offs, year one	0
Current-period gross charge offs, year two	0
Current-period gross charge offs, year three	0
Current-period gross charge offs, year four	0
Current-period gross charge offs, year five	0
Current-period gross charge offs, prior	0
Current-period gross charge offs, revolving loans amortized cost basis	0
Current-period gross charge offs	0
Municipal | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Year one	1,508	20,133
Year two	18,158	9,094
Year three	9,039	44,482
Year four	44,286	36,468
Year five	36,341	139,046
Prior	319,269	191,559
Revolving Loans Amortized Cost Basis	626	626
Loans, net of unearned income	429,227	441,408
Premium finance
Accounts, Notes, Loans and Financing Receivable [Line Items]
Year one	579,672	1,153,371
Year two	595,773	2,131
Year three	830	29
Year four	0	83
Year five	34	0
Prior	0	0
Revolving Loans Amortized Cost Basis	0	0
Loans, net of unearned income	1,176,309	1,155,614
Current-period gross charge offs, year one	2
Current-period gross charge offs, year two	2,145
Current-period gross charge offs, year three	181
Current-period gross charge offs, year four	1
Current-period gross charge offs, year five	0
Current-period gross charge offs, prior	0
Current-period gross charge offs, revolving loans amortized cost basis	0
Current-period gross charge offs	2,329
Premium finance | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Year one	579,662	1,141,370
Year two	585,673	1,648
Year three	789	28
Year four	0	83
Year five	34	0
Prior	0	0
Revolving Loans Amortized Cost Basis	0	0
Loans, net of unearned income	1,166,158	1,143,129
Premium finance | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Year one	10	12,001
Year two	10,100	483
Year three	41	1
Year four	0	0
Year five	0	0
Prior	0	0
Revolving Loans Amortized Cost Basis	0	0
Loans, net of unearned income	10,151	12,485
Real estate – construction and development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Year one	113,966	523,704
Year two	513,051	245,677
Year three	209,779	838,922
Year four	717,026	245,493
Year five	178,239	3,619
Prior	45,243	74,642
Revolving Loans Amortized Cost Basis	65,127	66,449
Loans, net of unearned income	1,842,431	1,998,506
Current-period gross charge offs, year one	0
Current-period gross charge offs, year two	0
Current-period gross charge offs, year three	0
Current-period gross charge offs, year four	0
Current-period gross charge offs, year five	0
Current-period gross charge offs, prior	0
Current-period gross charge offs, revolving loans amortized cost basis	0
Current-period gross charge offs	0
Real estate – construction and development | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Year one	113,966	523,704
Year two	513,051	245,526
Year three	209,360	835,742
Year four	715,221	245,091
Year five	177,903	3,619
Prior	44,478	73,816
Revolving Loans Amortized Cost Basis	65,127	66,449
Loans, net of unearned income	1,839,106	1,993,947
Real estate – construction and development | Special mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Year one	0	0
Year two	0	0
Year three	0	160
Year four	157	65
Year five	0	0
Prior	265	275
Revolving Loans Amortized Cost Basis	0	0
Loans, net of unearned income	422	500
Real estate – construction and development | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Year one	0	0
Year two	0	151
Year three	419	3,020
Year four	1,648	337
Year five	336	0
Prior	500	551
Revolving Loans Amortized Cost Basis	0	0
Loans, net of unearned income	2,903	4,059
Real estate – commercial and farmland
Accounts, Notes, Loans and Financing Receivable [Line Items]
Year one	119,012	330,472
Year two	314,868	458,037
Year three	445,254	2,393,474
Year four	2,574,913	2,191,759
Year five	2,193,450	1,018,148
Prior	2,823,896	1,940,152
Revolving Loans Amortized Cost Basis	103,233	113,916
Loans, net of unearned income	8,574,626	8,445,958
Current-period gross charge offs, year one	0
Current-period gross charge offs, year two	0
Current-period gross charge offs, year three	0
Current-period gross charge offs, year four	0
Current-period gross charge offs, year five	0
Current-period gross charge offs, prior	0
Current-period gross charge offs, revolving loans amortized cost basis	0
Current-period gross charge offs	0
Real estate – commercial and farmland | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Year one	119,012	330,472
Year two	314,868	456,486
Year three	442,501	2,373,426
Year four	2,552,724	2,173,060
Year five	2,172,750	990,712
Prior	2,762,827	1,866,277
Revolving Loans Amortized Cost Basis	103,233	113,916
Loans, net of unearned income	8,467,915	8,304,349
Real estate – commercial and farmland | Special mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Year one	0	0
Year two	0	0
Year three	1,207	3,069
Year four	4,741	14,844
Year five	15,184	14,706
Prior	41,298	63,717
Revolving Loans Amortized Cost Basis	0	0
Loans, net of unearned income	62,430	96,336
Real estate – commercial and farmland | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Year one	0	0
Year two	0	1,551
Year three	1,546	16,979
Year four	17,448	3,855
Year five	5,516	12,730
Prior	19,771	10,158
Revolving Loans Amortized Cost Basis	0	0
Loans, net of unearned income	44,281	45,273
Real estate – residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Year one	56,998	196,657
Year two	174,685	637,988
Year three	615,221	1,305,758
Year four	1,279,919	1,056,065
Year five	1,037,906	471,647
Prior	1,020,706	588,997
Revolving Loans Amortized Cost Basis	317,331	301,385
Loans, net of unearned income	4,502,766	4,558,497
Current-period gross charge offs, year one	0
Current-period gross charge offs, year two	0
Current-period gross charge offs, year three	110
Current-period gross charge offs, year four	0
Current-period gross charge offs, year five	0
Current-period gross charge offs, prior	146
Current-period gross charge offs, revolving loans amortized cost basis	0
Current-period gross charge offs	256
Real estate – residential | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Year one	56,998	193,939
Year two	172,625	628,098
Year three	601,770	1,291,666
Year four	1,264,239	1,046,164
Year five	1,027,564	460,887
Prior	986,354	561,386
Revolving Loans Amortized Cost Basis	308,779	292,193
Loans, net of unearned income	4,418,329	4,474,333
Real estate – residential | Special mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Year one	0	0
Year two	0	10
Year three	10	52
Year four	51	16
Year five	1,162	157
Prior	1,815	1,375
Revolving Loans Amortized Cost Basis	538	1,173
Loans, net of unearned income	3,576	2,783
Real estate – residential | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Year one	0	2,718
Year two	2,060	9,880
Year three	13,441	14,040
Year four	15,629	9,885
Year five	9,180	10,603
Prior	32,537	26,236
Revolving Loans Amortized Cost Basis	8,014	8,019
Loans, net of unearned income	80,861	$ 81,381
Total Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current-period gross charge offs, year one	120
Current-period gross charge offs, year two	4,651
Current-period gross charge offs, year three	3,968
Current-period gross charge offs, year four	4,434
Current-period gross charge offs, year five	1,325
Current-period gross charge offs, prior	886
Current-period gross charge offs, revolving loans amortized cost basis	0
Current-period gross charge offs	$ 15,384