PREMISES AND EQUIPMENT (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Premises and Equipment
Total cost basis	$ 32,649	$ 30,019
Less - accumulated depreciation	16,359	14,128
Net book value	16,290	15,891
Depreciation charged to operating expenses	1,978	1,617	$ 1,457
Land
Premises and Equipment
Total cost basis	2,998	2,566
Buildings and improvements
Premises and Equipment
Total cost basis	18,473	18,001
Furniture Fixtures And Equipment
Premises and Equipment
Total cost basis	$ 11,178	9,142
Construction in progress
Premises and Equipment
Total cost basis		$ 310