PREMISES AND EQUIPMENT - Schedule of Premises and Equipment (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	$ 325,757	$ 312,779
Accumulated depreciation	(100,357)	(89,889)
Premises and equipment, net	225,400	222,890
Land
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	69,038	68,370
Buildings and leasehold improvements
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	173,456	165,058
Furniture and equipment
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	82,268	74,821
Construction in progress
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	$ 995	$ 4,530

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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