PREMISES AND EQUIPMENT (Components of Premises and Equipment) (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Property, Plant and Equipment [Abstract]
Land	$ 10,160	$ 9,954
Buildings and leasehold improvements	62,215	61,357
Equipment	35,152	31,419
Total premises and equipment	107,527	102,730
Less: accumulated depreciation and amortization	(53,965)	(49,516)
Net premises and equipment	$ 53,562	$ 53,214