LOANS AND ALLOWANCE FOR LOAN LOSSES - Outstanding recorded investment of TDRs (Details) - USD ($)	Jun. 30, 2021	Dec. 31, 2020
Financing Receivable, Modifications, Recorded Investment	$ 9,515,000	$ 9,563,000
Non-accrual TDRs [Member]
Financing Receivable, Modifications, Recorded Investment	1,479,000	1,587,000
Accruing TDRs [Member]
Financing Receivable, Modifications, Recorded Investment	$ 8,036,000	$ 7,976,000