FINANCIAL INSTRUMENTS WITH OFF-BALANCE-SHEET RISK (Details) - USD ($)	9 Months Ended	12 Months Ended
	Sep. 30, 2018	Dec. 31, 2017
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Commitments term	2 years
Amount of off-balance-sheet financial instruments	$ 33,882,000	$ 63,392,000
Maturity of stand by letters of credit and time deposits	P1Y
Minimum
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Fixed interest rate off-balance-sheet financial instruments	3.00%	3.50%
Variable interest rate off-balance-sheet financial instrument	4.50%	4.50%
Maximum
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Fixed interest rate off-balance-sheet financial instruments	5.60%	9.30%
Variable interest rate off-balance-sheet financial instrument	10.30%	8.50%
Letters of credit
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Amount of off-balance-sheet financial instruments	$ 24,875,000	$ 23,741,000
Amount of off-balance-sheet financial instruments pledged	$ 200,000	$ 1,700,000