PREMISES AND EQUIPMENT (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
PREMISES AND EQUIPMENT
Gross premises and equipment	$ 40,121	$ 35,491
Less accumulated depreciation and amortization	12,735	11,216
Net premises and equipment	27,386	24,275
Depreciation and amortization	2,632	3,146	$ 3,366
Land
PREMISES AND EQUIPMENT
Gross premises and equipment	7,107	6,400
Premises
PREMISES AND EQUIPMENT
Gross premises and equipment	20,808	18,568
Furniture and equipment
PREMISES AND EQUIPMENT
Gross premises and equipment	9,895	8,825
Leasehold improvements
PREMISES AND EQUIPMENT
Gross premises and equipment	2,311	1,698
Premises and Equipment
PREMISES AND EQUIPMENT
Depreciation and amortization	$ 1,659	$ 1,578	$ 1,564