PREMISES AND EQUIPMENT (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Premises and Equipment
Gross premises and equipment	$ 206,137	$ 191,327
Accumulated depreciation and amortization	(114,503)	(110,973)
Net premises and equipment	91,634	80,354
Land
Premises and Equipment
Gross premises and equipment	23,150	14,184
Office buildings and improvements
Premises and Equipment
Gross premises and equipment	145,793	141,628
Furniture, fixtures and equipment
Premises and Equipment
Gross premises and equipment	$ 37,194	$ 35,515