LOANS AND THE ALLOWANCE FOR LOAN LOSSES - Recorded investment in non-accrual loans by class (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-accrual loans	$ 4,021	$ 4,058
Recorded investments	3,500	3,600
Cash, Securities and Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-accrual loans	23	50
Owner Occupied CRE
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-accrual loans	479	479
Commercial and Industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-accrual loans	$ 3,519	$ 3,529