LOANS AND THE ALLOWANCE FOR CREDIT LOSSES - Recorded investment in non-accrual loans by class (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2023	Dec. 31, 2022
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-accrual loans with no ACL	$ 47,045	$ 12,137
Total non-accrual loans	55,620	12,137
90 or More Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans past due over 89 days still accruing	0	25
Cash, Securities, and Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-accrual loans with no ACL	1,704	4
Total non-accrual loans	1,704	4
Cash, Securities, and Other | 90 or More Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans past due over 89 days still accruing	0	0
Consumer and Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-accrual loans with no ACL	7,503	5
Total non-accrual loans	7,503	5
Consumer and Other | 90 or More Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans past due over 89 days still accruing	0	0
Construction and Development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-accrual loans with no ACL	0	201
Total non-accrual loans	0	201
Construction and Development | 90 or More Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans past due over 89 days still accruing	0	0
1-4 Family Residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-accrual loans with no ACL	3,063	0
Total non-accrual loans	3,063	0
1-4 Family Residential | 90 or More Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans past due over 89 days still accruing	0	0
Owner Occupied CRE
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-accrual loans with no ACL	3,980	1,165
Total non-accrual loans	3,980	1,165
Owner Occupied CRE | 90 or More Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans past due over 89 days still accruing	0	0
Commercial and Industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-accrual loans with no ACL	30,795	10,762
Total non-accrual loans	39,370	10,762
Commercial and Industrial | 90 or More Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans past due over 89 days still accruing	0	$ 25
Individual Commercial and Industrial, Individually Analyzed Loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total non-accrual loans	8,600
Provision for loan losses, specific reserves	$ 4,000