COMMITMENTS AND CONTINGENT LIABILITIES (Details) - USD ($)	Dec. 31, 2017	Dec. 31, 2016
Financial Instruments with Off-Balance-Sheet Risk
Total contractual amounts of the commitments	$ 341,340,000	$ 270,675,000
Average balance maintained in accordance with Federal Reserve Board requirements	0	0
Available on lines of credit
Financial Instruments with Off-Balance-Sheet Risk
Total contractual amounts of the commitments	327,647,000	255,469,000
Stand-by letters of credit
Financial Instruments with Off-Balance-Sheet Risk
Total contractual amounts of the commitments	12,297,000	13,387,000
Other loan commitments
Financial Instruments with Off-Balance-Sheet Risk
Total contractual amounts of the commitments	$ 1,396,000	$ 1,819,000