SECURITIES (Schedule of Carrying Value, Gross Unrealized Gains and Losses and Estimated Fair Value of Securities) (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Schedule of Held-to-maturity Securities [Line Items]
Total HTM Securities	$ 843,269	$ 847,732
Gross Unrealized Gains	49	2,218
Gross Unrealized Losses	(81,272)	(48,063)
Held-to-maturity Securities, Fair Value	762,046	801,887
U.S. government and agency securities
Schedule of Held-to-maturity Securities [Line Items]
Total HTM Securities	0	687
Gross Unrealized Gains		0
Gross Unrealized Losses		(56)
Held-to-maturity Securities, Fair Value		631
Obligations of states and political subdivisions
Schedule of Held-to-maturity Securities [Line Items]
Total HTM Securities	700,400	705,990
Gross Unrealized Gains	49	2,218
Gross Unrealized Losses	(64,625)	(35,957)
Held-to-maturity Securities, Fair Value	635,824	672,251
Corporate and other bonds
Schedule of Held-to-maturity Securities [Line Items]
Total HTM Securities	4,536	5,159
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(170)	(10)
Held-to-maturity Securities, Fair Value	4,366	5,149
Mortgage-backed securities
Schedule of Held-to-maturity Securities [Line Items]
Total HTM Securities	138,333	135,896
Commercial
Schedule of Held-to-maturity Securities [Line Items]
Total HTM Securities	52,498	42,761
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(7,692)	(4,999)
Held-to-maturity Securities, Fair Value	44,806	37,762
Residential
Schedule of Held-to-maturity Securities [Line Items]
Total HTM Securities	85,835	93,135
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(8,785)	(7,041)
Held-to-maturity Securities, Fair Value	77,050	86,094
Agency | Commercial
Schedule of Held-to-maturity Securities [Line Items]
Total HTM Securities	27,568	29,025
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(6,788)	(4,873)
Held-to-maturity Securities, Fair Value	20,780	24,152
Agency | Residential
Schedule of Held-to-maturity Securities [Line Items]
Total HTM Securities	40,992	42,699
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(7,865)	(6,427)
Held-to-maturity Securities, Fair Value	33,127	36,272
Non-agency | Commercial
Schedule of Held-to-maturity Securities [Line Items]
Total HTM Securities	24,930	13,736
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(904)	(126)
Held-to-maturity Securities, Fair Value	24,026	13,610
Non-agency | Residential
Schedule of Held-to-maturity Securities [Line Items]
Total HTM Securities	44,843	50,436
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(920)	(614)
Held-to-maturity Securities, Fair Value	$ 43,923	$ 49,822