PREMISES AND EQUIPMENT (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	$ 41,742	$ 41,146
Less accumulated depreciation	(17,740)	(15,472)
Total	24,002	25,674
Depreciation	2,044	2,388	$ 1,849
Land
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	7,660	7,660
Buildings and improvements
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	23,598	23,293
Furniture, fixtures and equipment
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	$ 10,484	$ 10,193