PREMISES AND EQUIPMENT - Schedule of Premises and Equipment (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	$ 84,208	$ 79,515
Less: accumulated depreciation	30,777	27,288
Premises and equipment, net	53,431	52,227
Land
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	10,944	10,924
Building and improvements
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	54,809	52,623
Furniture, fixtures and equipment
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	17,960	15,675
Automobiles
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	$ 495	$ 293