INVESTMENT SECURITIES (Held to Maturity Investment Securities) (Details) - USD ($)	Dec. 31, 2025	Dec. 31, 2024
Schedule of Held-to-Maturity Securities [Line Items]
Amortized Cost	$ 562,391,000	$ 596,930,000
Gross Unrecognized Gains	131,000	0
Gross Unrecognized Losses	(66,677,000)	(90,249,000)
Fair Value	495,845,000	506,681,000
ACL	0	0
States and political subdivisions
Schedule of Held-to-Maturity Securities [Line Items]
Amortized Cost	41,925,000	42,016,000
Gross Unrecognized Gains	0	0
Gross Unrecognized Losses	(7,226,000)	(8,884,000)
Fair Value	34,699,000	33,132,000
ACL	0	0
Residential - U.S. government-sponsored entities and agencies
Schedule of Held-to-Maturity Securities [Line Items]
Amortized Cost	520,466,000	554,914,000
Gross Unrecognized Gains	131,000	0
Gross Unrecognized Losses	(59,451,000)	(81,365,000)
Fair Value	461,146,000	473,549,000
ACL	$ 0	$ 0