LOANS AND ALLOWANCE FOR LOAN LOSSES - Outstanding recorded investment of TDRs (Details) - USD ($)	Sep. 30, 2020	Dec. 31, 2019
Financing Receivable, Modifications, Recorded Investment	$ 8,807,000	$ 8,678,000
Non-accrual TDRs [Member]
Financing Receivable, Modifications, Recorded Investment	1,675,000	112,000
Accruing TDRs [Member]
Financing Receivable, Modifications, Recorded Investment	$ 7,132,000	$ 8,566,000