PREMISES AND EQUIPMENT - Schedule of Premises and Equipment (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	$ 337,793	$ 333,100
Accumulated depreciation	(121,358)	(112,817)
Premises and equipment, net	216,435	220,283
Land
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	69,478	69,387
Buildings and leasehold improvements
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	174,562	176,153
Furniture and equipment
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	89,756	85,217
Construction in progress
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	$ 3,997	$ 2,343