PREMISES AND EQUIPMENT (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Premises and equipment
Premises and equipment, gross	$ 166,364	$ 180,214
Accumulated depreciation and amortization	(97,449)	(94,997)
Premises and equipment, net	68,915	85,217
Depreciation and amortization expense	8,400	9,600	$ 11,000
Land
Premises and equipment
Premises and equipment, gross	12,525	15,536
Buildings and improvements
Premises and equipment
Premises and equipment, gross	$ 89,222	99,977
Buildings and improvements | Minimum
Premises and equipment
Estimated Useful Life	5 years
Buildings and improvements | Maximum
Premises and equipment
Estimated Useful Life	39 years
Furniture and equipment
Premises and equipment
Premises and equipment, gross	$ 64,290	63,554
Furniture and equipment | Minimum
Premises and equipment
Estimated Useful Life	3 years
Furniture and equipment | Maximum
Premises and equipment
Estimated Useful Life	7 years
Construction in process
Premises and equipment
Premises and equipment, gross	$ 327	1,147
Continuing and Discontinued Operations
Premises and equipment
Premises and equipment, net	$ 68,915	$ 85,217