LOANS RECEIVABLE AND ALLOWANCE FOR CREDIT LOSSES - Amortized Cost Basis of Collateral-Dependent Loans (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Real Estate Collateral
Financing Receivable, Credit Quality Indicator [Line Items]
Amortized cost basis of collateral-dependent loans	$ 25,265	$ 11,051
Non-Real Estate Collateral
Financing Receivable, Credit Quality Indicator [Line Items]
Amortized cost basis of collateral-dependent loans	1,685	1,908
Farmland | Real Estate Collateral
Financing Receivable, Credit Quality Indicator [Line Items]
Amortized cost basis of collateral-dependent loans	763	829
Farmland | Non-Real Estate Collateral
Financing Receivable, Credit Quality Indicator [Line Items]
Amortized cost basis of collateral-dependent loans	0	0
Owner-occupied, nonfarm nonresidential properties | Real Estate Collateral
Financing Receivable, Credit Quality Indicator [Line Items]
Amortized cost basis of collateral-dependent loans	6,898	1,296
Owner-occupied, nonfarm nonresidential properties | Non-Real Estate Collateral
Financing Receivable, Credit Quality Indicator [Line Items]
Amortized cost basis of collateral-dependent loans	4	4
Commercial and Industrial | Real Estate Collateral
Financing Receivable, Credit Quality Indicator [Line Items]
Amortized cost basis of collateral-dependent loans	5,488	0
Commercial and Industrial | Non-Real Estate Collateral
Financing Receivable, Credit Quality Indicator [Line Items]
Amortized cost basis of collateral-dependent loans	1,681	1,904
Other construction loans and all land development and other land loans | Real Estate Collateral
Financing Receivable, Credit Quality Indicator [Line Items]
Amortized cost basis of collateral-dependent loans	1,549	501
Other construction loans and all land development and other land loans | Non-Real Estate Collateral
Financing Receivable, Credit Quality Indicator [Line Items]
Amortized cost basis of collateral-dependent loans	0	0
Multifamily (5 or more) residential properties | Real Estate Collateral
Financing Receivable, Credit Quality Indicator [Line Items]
Amortized cost basis of collateral-dependent loans	305	1,066
Multifamily (5 or more) residential properties | Non-Real Estate Collateral
Financing Receivable, Credit Quality Indicator [Line Items]
Amortized cost basis of collateral-dependent loans	0	0
Non-owner occupied, nonfarm nonresidential properties | Real Estate Collateral
Financing Receivable, Credit Quality Indicator [Line Items]
Amortized cost basis of collateral-dependent loans	8,858	5,874
Non-owner occupied, nonfarm nonresidential properties | Non-Real Estate Collateral
Financing Receivable, Credit Quality Indicator [Line Items]
Amortized cost basis of collateral-dependent loans	0	0
Home equity lines of credit | Real Estate Collateral
Financing Receivable, Credit Quality Indicator [Line Items]
Amortized cost basis of collateral-dependent loans	317	335
Home equity lines of credit | Non-Real Estate Collateral
Financing Receivable, Credit Quality Indicator [Line Items]
Amortized cost basis of collateral-dependent loans	0	0
Residential Mortgages secured by first liens | Real Estate Collateral
Financing Receivable, Credit Quality Indicator [Line Items]
Amortized cost basis of collateral-dependent loans	1,087	1,150
Residential Mortgages secured by first liens | Non-Real Estate Collateral
Financing Receivable, Credit Quality Indicator [Line Items]
Amortized cost basis of collateral-dependent loans	$ 0	$ 0