SECURITIES (Held-to-maturity Securities) (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Schedule of Held-to-maturity Securities [Line Items]
Total investment securities	$ 838,241	$ 829,403
Gross Unrealized Gains	3,622	3,096
Gross Unrealized Losses	(25,464)	(55,942)
Held to maturity securities, fair value	816,399	776,557
Held to maturity, allowance for credit losses	0	0
Obligations of states and political subdivisions
Schedule of Held-to-maturity Securities [Line Items]
Total investment securities	838,241	829,403
Gross Unrealized Gains	3,622	3,096
Gross Unrealized Losses	(25,464)	(55,942)
Held to maturity securities, fair value	816,399	776,557
Held to maturity, allowance for credit losses	$ 0	$ 0