LOANS AND ALLOWANCE FOR CREDIT LOSSES - Schedule of Allowance for Loan Losses (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Allowance for Loan and Lease Losses [Roll Forward]
Balance at beginning of period	$ 205,677	$ 167,582	$ 199,422
Provision for credit losses	153,515	52,610	(35,081)
Loans charged off	(75,218)	(33,075)	(21,616)
Recoveries of loans previously charged off	24,837	18,560	15,425
Balance at end of period	307,100	205,677	167,582
Accounting Standards Update 2022-02
Allowance for Loan and Lease Losses [Roll Forward]
Balance at beginning of period	(1,711)
Balance at end of period		(1,711)
Accounting Standards Update 2016-13
Allowance for Loan and Lease Losses [Roll Forward]
Provision for credit losses			9,432
Commercial, financial and agricultural
Allowance for Loan and Lease Losses [Roll Forward]
Balance at beginning of period	39,455	26,829	7,359
Provision for credit losses	68,349	21,307	12,071
Initial allowance for PCD assets			9,432
Loans charged off	(58,612)	(18,635)	(7,760)
Recoveries of loans previously charged off	14,966	9,954	5,727
Balance at end of period	64,053	39,455	26,829
Commercial, financial and agricultural | Accounting Standards Update 2022-02
Allowance for Loan and Lease Losses [Roll Forward]
Balance at beginning of period	(105)
Balance at end of period		(105)
Consumer
Allowance for Loan and Lease Losses [Roll Forward]
Balance at beginning of period	5,413	6,097	4,076
Provision for credit losses	2,963	3,360	7,330
Initial allowance for PCD assets			0
Loans charged off	(5,298)	(4,926)	(6,248)
Recoveries of loans previously charged off	824	882	939
Balance at end of period	3,902	5,413	6,097
Consumer | Accounting Standards Update 2022-02
Allowance for Loan and Lease Losses [Roll Forward]
Balance at beginning of period	0
Balance at end of period		0
Indirect automobile
Allowance for Loan and Lease Losses [Roll Forward]
Balance at beginning of period	174	476	1,929
Provision for credit losses	(745)	(1,082)	(1,944)
Initial allowance for PCD assets			0
Loans charged off	(155)	(265)	(1,188)
Recoveries of loans previously charged off	776	1,045	1,679
Balance at end of period	50	174	476
Indirect automobile | Accounting Standards Update 2022-02
Allowance for Loan and Lease Losses [Roll Forward]
Balance at beginning of period	0
Balance at end of period		0
Mortgage warehouse
Allowance for Loan and Lease Losses [Roll Forward]
Balance at beginning of period	2,118	3,231	3,666
Provision for credit losses	(440)	(1,113)	(435)
Initial allowance for PCD assets			0
Loans charged off	0	0	0
Recoveries of loans previously charged off	0	0	0
Balance at end of period	1,678	2,118	3,231
Mortgage warehouse | Accounting Standards Update 2022-02
Allowance for Loan and Lease Losses [Roll Forward]
Balance at beginning of period	0
Balance at end of period		0
Municipal
Allowance for Loan and Lease Losses [Roll Forward]
Balance at beginning of period	357	401	791
Provision for credit losses	(12)	(44)	(390)
Initial allowance for PCD assets			0
Loans charged off	0	0	0
Recoveries of loans previously charged off	0	0	0
Balance at end of period	345	357	401
Municipal | Accounting Standards Update 2022-02
Allowance for Loan and Lease Losses [Roll Forward]
Balance at beginning of period	0
Balance at end of period		0
Premium finance
Allowance for Loan and Lease Losses [Roll Forward]
Balance at beginning of period	1,025	2,729	3,879
Provision for credit losses	343	(1,317)	(2,352)
Initial allowance for PCD assets			0
Loans charged off	(6,567)	(5,452)	(3,668)
Recoveries of loans previously charged off	5,801	5,065	4,870
Balance at end of period	602	1,025	2,729
Premium finance | Accounting Standards Update 2022-02
Allowance for Loan and Lease Losses [Roll Forward]
Balance at beginning of period	0
Balance at end of period		0
Real estate – construction and development
Allowance for Loan and Lease Losses [Roll Forward]
Balance at beginning of period	32,659	22,045	45,304
Provision for credit losses	27,446	9,749	(23,532)
Loans charged off	0	(27)	(233)
Recoveries of loans previously charged off	949	892	506
Balance at end of period	61,017	32,659	22,045
Real estate – construction and development | Accounting Standards Update 2022-02
Allowance for Loan and Lease Losses [Roll Forward]
Balance at beginning of period	(37)
Balance at end of period		(37)
Real estate – construction and development | Accounting Standards Update 2016-13
Allowance for Loan and Lease Losses [Roll Forward]
Provision for credit losses			0
Real estate – commercial and farmland
Allowance for Loan and Lease Losses [Roll Forward]
Balance at beginning of period	67,433	77,831	88,894
Provision for credit losses	47,079	(7,049)	(9,784)
Loans charged off	(4,327)	(3,574)	(1,852)
Recoveries of loans previously charged off	634	225	573
Balance at end of period	110,097	67,433	77,831
Real estate – commercial and farmland | Accounting Standards Update 2022-02
Allowance for Loan and Lease Losses [Roll Forward]
Balance at beginning of period	(722)
Balance at end of period		(722)
Real estate – commercial and farmland | Accounting Standards Update 2016-13
Allowance for Loan and Lease Losses [Roll Forward]
Provision for credit losses			0
Real estate – residential
Allowance for Loan and Lease Losses [Roll Forward]
Balance at beginning of period	57,043	27,943	43,524
Provision for credit losses	8,532	28,799	(16,045)
Loans charged off	(259)	(196)	(667)
Recoveries of loans previously charged off	887	497	1,131
Balance at end of period	65,356	57,043	27,943
Real estate – residential | Accounting Standards Update 2022-02
Allowance for Loan and Lease Losses [Roll Forward]
Balance at beginning of period	$ (847)
Balance at end of period		$ (847)
Real estate – residential | Accounting Standards Update 2016-13
Allowance for Loan and Lease Losses [Roll Forward]
Provision for credit losses			$ 0