LOANS AND ALLOWANCE FOR LOAN LOSSES - Outstanding recorded investment of TDRs (Details) - USD ($)	Jun. 30, 2019	Dec. 31, 2018
Financing Receivable, Modifications, Recorded Investment	$ 8,917,000	$ 13,777,000
Non-accrual TDRs [Member]
Financing Receivable, Modifications, Recorded Investment	113,000	80,000
Accruing TDRs [Member]
Financing Receivable, Modifications, Recorded Investment	$ 8,804,000	$ 13,697,000