INVESTMENTS (Summary of Amortized Cost and Fair Value of Held to Maturity Securities) (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Schedule of Investments [Line Items]
Held-to-maturity securities, at amortized cost	$ 533,600	$ 544,931
Unrealized Gains	754	3,134
Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss	(48,534)	(37,470)
Held-to-maturity securities, fair value	485,820	510,595
Obligations of U.S. government-sponsored enterprises
Schedule of Investments [Line Items]
Held-to-maturity securities, at amortized cost	7,661	7,593
Unrealized Gains	0	0
Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss	(623)	(528)
Held-to-maturity securities, fair value	7,038	7,065
Debt Securities, Held-to-Maturity, Amortized Cost, Unamortized Unrealized Loss	924	992
Obligations of states and political subdivisions
Schedule of Investments [Line Items]
Held-to-maturity securities, at amortized cost	56,404	56,262
Unrealized Gains	86	1,242
Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss	(1,839)	(731)
Held-to-maturity securities, fair value	54,651	56,773
Debt Securities, Held-to-Maturity, Amortized Cost, Unamortized Unrealized Loss	5,400	5,600
MBS issued or guaranteed by U.S. government-sponsored enterprises
Schedule of Investments [Line Items]
Held-to-maturity securities, at amortized cost	299,066	304,850
Unrealized Gains	0	0
Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss	(29,946)	(21,623)
Held-to-maturity securities, fair value	269,120	283,227
Debt Securities, Held-to-Maturity, Amortized Cost, Unamortized Unrealized Loss	32,800	34,600
Collateralized mortgage obligations issued or guaranteed by U.S. government-sponsored enterprises
Schedule of Investments [Line Items]
Held-to-maturity securities, at amortized cost	151,232	157,118
Unrealized Gains	210	515
Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss	(14,881)	(13,497)
Held-to-maturity securities, fair value	136,561	144,136
Debt Securities, Held-to-Maturity, Amortized Cost, Unamortized Unrealized Loss	17,400	18,400
Corporate bonds
Schedule of Investments [Line Items]
Held-to-maturity securities, at amortized cost	19,237	19,108
Unrealized Gains	458	1,377
Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss	(1,245)	(1,091)
Held-to-maturity securities, fair value	18,450	19,394
Debt Securities, Held-to-Maturity, Amortized Cost, Unamortized Unrealized Loss	$ 70	$ 85