LOANS AND THE ALLOWANCE FOR CREDIT LOSSES - Summary of nonaccrual loans with collateral (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated	$ 55,617	$ 12,137
Total Collateral
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated	48,117
Secured by Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated	7,043
Secured by Cash and Securities
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated	1,704
Secured by Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated	39,370
Cash, Securities, and Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated	1,704	4
Cash, Securities, and Other | Total Collateral
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated	1,704
Cash, Securities, and Other | Secured by Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated	0
Cash, Securities, and Other | Secured by Cash and Securities
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated	1,704
Cash, Securities, and Other | Secured by Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated	0
Consumer and Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated	7,500	5
Consumer and Other | Total Collateral
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated	0
Consumer and Other | Secured by Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated	0
Consumer and Other | Secured by Cash and Securities
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated	0
Consumer and Other | Secured by Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated	0
Construction and Development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated		201
Construction and Development | Total Collateral
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated	0
Construction and Development | Secured by Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated	0
Construction and Development | Secured by Cash and Securities
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated	0
Construction and Development | Secured by Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated	0
1-4 Family Residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated	3,063
1-4 Family Residential | Total Collateral
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated	3,063
1-4 Family Residential | Secured by Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated	3,063
1-4 Family Residential | Secured by Cash and Securities
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated	0
1-4 Family Residential | Secured by Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated	0
Non-Owner Occupied CRE | Total Collateral
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated	0
Non-Owner Occupied CRE | Secured by Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated	0
Non-Owner Occupied CRE | Secured by Cash and Securities
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated	0
Non-Owner Occupied CRE | Secured by Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated	0
Owner Occupied CRE
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated	3,980	$ 1,165
Owner Occupied CRE | Total Collateral
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated	3,980
Owner Occupied CRE | Secured by Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated	3,980
Owner Occupied CRE | Secured by Cash and Securities
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated	0
Owner Occupied CRE | Secured by Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated	0
Commercial and Industrial | Total Collateral
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated	39,370
Commercial and Industrial | Secured by Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated	0
Commercial and Industrial | Secured by Cash and Securities
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated	0
Commercial and Industrial | Secured by Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Individually evaluated	$ 39,370