SECURITIES (Securities held to maturity) (Details) $ in Thousands	Mar. 31, 2024 USD ($) security	Dec. 31, 2023 USD ($) security
Fair Value
Less than 12 months	$ 51,881	$ 145,471
12 months or longer	670,921	569,691
Total	722,802	715,162
Unrealized Losses
Less than 12 months	(1,347)	(3,706)
12 months or longer	(29,114)	(21,758)
Total	$ (30,461)	$ (25,464)
Count
Less than 12 months | security	13	23
12 months or longer | security	141	126
Total | security	154	149
Obligations of states and political subdivisions
Fair Value
Less than 12 months	$ 51,881	$ 145,471
12 months or longer	670,921	569,691
Total	722,802	715,162
Unrealized Losses
Less than 12 months	(1,347)	(3,706)
12 months or longer	(29,114)	(21,758)
Total	$ (30,461)	$ (25,464)
Count
Less than 12 months | security	13	23
12 months or longer | security	141	126
Total | security	154	149