INVESTMENT SECURITIES, Analysis of Gross Unrealized Losses (Details) $ in Thousands	Jun. 30, 2024 USD ($) Security	Dec. 31, 2023 USD ($)
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Less than 12 months, fair value	$ 105,853	$ 32,025
12 months or more, fair value	424,002	470,459
Total fair value	529,855	502,484
Less than 12 months, unrealized losses	(1,364)	(188)
12 Months or more, unrealized losses	(48,850)	(48,502)
Total unrealized losses	$ (50,214)	(48,690)
Investment securities in an unrealized loss position less than 12 months | Security	80
Investment securities in an unrealized loss position more than 12 months | Security	452
Investment securities - available-for-sale, at estimated fair value, net of allowance for credit losses	$ 0	0
Asset Pledged as Collateral [Member] | Public Deposits or Other Purposes [Member]
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Investment securities	49,719	43,884
U.S. Treasury Securities [Member]
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Less than 12 months, fair value	21,040	0
12 months or more, fair value	59,394	77,203
Total fair value	80,434	77,203
Less than 12 months, unrealized losses	(52)	0
12 Months or more, unrealized losses	(2,395)	(3,015)
Total unrealized losses	(2,447)	(3,015)
Investment securities - available-for-sale, at estimated fair value, net of allowance for credit losses	0	0
Securities of U.S. Government Agencies and Corporations [Member]
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Less than 12 months, fair value	19,419	3,424
12 months or more, fair value	79,620	97,057
Total fair value	99,039	100,481
Less than 12 months, unrealized losses	(80)	(7)
12 Months or more, unrealized losses	(5,623)	(6,324)
Total unrealized losses	(5,703)	(6,331)
Investment securities - available-for-sale, at estimated fair value, net of allowance for credit losses	0	0
Obligations of States and Political Subdivisions [Member]
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Less than 12 months, fair value	15,905	4,981
12 months or more, fair value	31,958	32,578
Total fair value	47,863	37,559
Less than 12 months, unrealized losses	(340)	(31)
12 Months or more, unrealized losses	(4,051)	(3,550)
Total unrealized losses	(4,391)	(3,581)
Investment securities - available-for-sale, at estimated fair value, net of allowance for credit losses	0	0
Collateralized Mortgage Obligations [Member]
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Less than 12 months, fair value	7,538	6,597
12 months or more, fair value	78,980	80,995
Total fair value	86,518	87,592
Less than 12 months, unrealized losses	(69)	(26)
12 Months or more, unrealized losses	(17,548)	(16,700)
Total unrealized losses	(17,617)	(16,726)
Investment securities - available-for-sale, at estimated fair value, net of allowance for credit losses	0	0
Mortgage-backed Securities [Member]
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Less than 12 months, fair value	41,951	17,023
12 months or more, fair value	174,050	182,626
Total fair value	216,001	199,649
Less than 12 months, unrealized losses	(823)	(124)
12 Months or more, unrealized losses	(19,233)	(18,913)
Total unrealized losses	(20,056)	(19,037)
Investment securities - available-for-sale, at estimated fair value, net of allowance for credit losses	$ 0	$ 0