LOANS - Loans and Allowance for Loan Losses, Broken Down by Portfolio Segment (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2022	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2021
Accounts, Notes, Loans and Financing Receivable [Line Items]
LHFI	$ 5,010,925		$ 3,774,157
Allowance for Credit Losses	52,614	$ 52,450	38,917	$ 32,400	$ 31,620	$ 30,742
Commercial, financial and agriculture
Accounts, Notes, Loans and Financing Receivable [Line Items]
LHFI	790,295		536,192
Allowance for Credit Losses	8,972	9,443	6,349	4,511	4,874	4,873
Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
LHFI	2,915,886		2,135,263
Allowance for Credit Losses	28,726	28,052	20,389	18,668	17,773	17,552
Consumer real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
LHFI	1,249,295		1,058,999
Allowance for Credit Losses	14,123	14,201	11,599	8,752	8,492	7,889
Consumer installment
Accounts, Notes, Loans and Financing Receivable [Line Items]
LHFI	55,449		43,703
Allowance for Credit Losses	793	$ 754	580	$ 469	$ 481	$ 428
Individually evaluated
Accounts, Notes, Loans and Financing Receivable [Line Items]
LHFI	6,776		5,558
Allowance for Credit Losses	36		5
Individually evaluated | Commercial, financial and agriculture
Accounts, Notes, Loans and Financing Receivable [Line Items]
LHFI	172		0
Allowance for Credit Losses	0		0
Individually evaluated | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
LHFI	5,030		4,560
Allowance for Credit Losses	0		0
Individually evaluated | Consumer real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
LHFI	1,574		998
Allowance for Credit Losses	36		5
Individually evaluated | Consumer installment
Accounts, Notes, Loans and Financing Receivable [Line Items]
LHFI	0		0
Allowance for Credit Losses	0		0
Collectively evaluated
Accounts, Notes, Loans and Financing Receivable [Line Items]
LHFI	5,004,149		3,768,599
Allowance for Credit Losses	52,578		38,912
Collectively evaluated | Commercial, financial and agriculture
Accounts, Notes, Loans and Financing Receivable [Line Items]
LHFI	790,123		536,192
Allowance for Credit Losses	8,972		6,349
Collectively evaluated | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
LHFI	2,910,856		2,130,703
Allowance for Credit Losses	28,726		20,389
Collectively evaluated | Consumer real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
LHFI	1,247,721		1,058,001
Allowance for Credit Losses	14,087		11,594
Collectively evaluated | Consumer installment
Accounts, Notes, Loans and Financing Receivable [Line Items]
LHFI	55,449		43,703
Allowance for Credit Losses	$ 793		$ 580