LOANS AND ALLOWANCE FOR LOAN LOSSES - Troubled Debt Restructuring (Details)	3 Months Ended	6 Months Ended
	Jun. 30, 2019 USD ($) loan	Jun. 30, 2019 USD ($) loan	Jun. 30, 2018 loan	Dec. 31, 2018 USD ($) loan
Receivables [Abstract]
Number of projected future quarters under review		1 year
Performing TDRs	$ 17,800,000	$ 17,800,000		$ 18,800,000
Number of nonperforming TDR loans | loan	1	1		0
Nonperforming TDRs	$ 286,000	$ 286,000
Number of loans modified as TDRs | loan	0		0
Debt coverage ratio	1.25	1.25
Allowances for performing TDRs	$ 290,000	$ 290,000		$ 306,000
Allowance for nonperforming TDRs	$ 25,500	$ 25,500
Subsequent default, number of contracts | loan			0