PREMISES AND EQUIPMENT - Schedule of Premises and Equipment (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	$ 216,878	$ 184,636
Accumulated depreciation	(71,468)	(66,898)
Premises and equipment, net	145,410	117,738
Land
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	49,518	39,299
Buildings and leasehold improvements
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	110,623	95,771
Furniture and equipment
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	53,425	48,809
Construction in progress
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	$ 3,312	$ 757

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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