FAIR VALUE OF FINANCIAL INSTRUMENTS, QUANTITATIVE INFORMATION ABOUT UNOBSERVABLE INPUTS USED IN RECURRING AND NONRECURRING LEVEL 3 INPUTS (Details) - Nonrecurring fair value measurements - Impaired loans - Significant Unobservable Inputs (Level 3) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	$ 3,359	$ 5,340
High
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Discount rate	8.25%	8.25%
Low
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Discount rate	3.25%	4.50%
Weighted Average
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Discount rate	6.27%	5.56%