FAIR VALUE DISCLOSURES AND REPORTING, THE FAIR VALUE OPTION AND FAIR VALUE MEASUREMENTS - Fair Value of Assets Measured on Nonrecurring Basis (Details) - Fair Value, Nonrecurring - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Collateral dependent loans
Fair Value, Assets and Liabilities Measured on Nonrecurring Basis [Line Items]
Assets measured at fair value on a nonrecurring basis	$ 7,406	$ 5,552
Other real estate owned
Fair Value, Assets and Liabilities Measured on Nonrecurring Basis [Line Items]
Assets measured at fair value on a nonrecurring basis	4,920	4,832
Quoted Prices (Level 1) | Collateral dependent loans
Fair Value, Assets and Liabilities Measured on Nonrecurring Basis [Line Items]
Assets measured at fair value on a nonrecurring basis	0	0
Quoted Prices (Level 1) | Other real estate owned
Fair Value, Assets and Liabilities Measured on Nonrecurring Basis [Line Items]
Assets measured at fair value on a nonrecurring basis	0	0
Significant Other Observable Inputs (Level 2) | Collateral dependent loans
Fair Value, Assets and Liabilities Measured on Nonrecurring Basis [Line Items]
Assets measured at fair value on a nonrecurring basis	0	0
Significant Other Observable Inputs (Level 2) | Other real estate owned
Fair Value, Assets and Liabilities Measured on Nonrecurring Basis [Line Items]
Assets measured at fair value on a nonrecurring basis	0	0
Significant Unobservable Inputs (Level 3) | Collateral dependent loans
Fair Value, Assets and Liabilities Measured on Nonrecurring Basis [Line Items]
Assets measured at fair value on a nonrecurring basis	7,406	5,552
Significant Unobservable Inputs (Level 3) | Other real estate owned
Fair Value, Assets and Liabilities Measured on Nonrecurring Basis [Line Items]
Assets measured at fair value on a nonrecurring basis	$ 4,920	$ 4,832