BORROWINGS, SHORT TERM DEBT (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Short-term Debt [Line Items]
Amount	$ 47,000	$ 42,040
Rate	1.43%	0.42%
Line of credit
Short-term Debt [Line Items]
Amount	$ 0	$ 0
Rate	0.00%	0.00%
FHLB short-term advance
Short-term Debt [Line Items]
Amount	$ 47,000	$ 25,000
Rate	1.43%	0.63%
Repurchase agreements
Short-term Debt [Line Items]
Amount	$ 0	$ 17,040
Rate	0.00%	0.10%