PREMISES AND EQUIPMENT (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	$ 112,474	$ 107,708
Less accumulated depreciation and amortization	(43,369)	(37,750)
Premises and equipment, net	69,105	69,958
Depreciation expense	6,168	6,062	$ 5,568
Land
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	16,253	16,078
Buildings and improvements
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	54,126	50,731
Furniture, fixtures, and equipment
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	28,165	27,121
Automobiles
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	1,787	1,512
Leasehold improvements
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	10,725	10,178
Construction-in-process
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	$ 1,418	$ 2,088