SECURITIES (Schedule of Carrying Value, Gross Unrealized Gains and Losses and Estimated Fair Value of Securities) (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Schedule of Held-to-maturity Securities [Line Items]
Total HTM Securities	$ 628,000	$ 544,851
Gross Unrealized Gains	65,982	74,982
Gross Unrealized Losses	(208)	(68)
Held-to-maturity Securities, Fair Value	693,774	619,765
U.S. government and agency securities
Schedule of Held-to-maturity Securities [Line Items]
Total HTM Securities	2,604	2,751
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(29)	(18)
Held-to-maturity Securities, Fair Value	2,575	2,733
Obligations of states and political subdivisions
Schedule of Held-to-maturity Securities [Line Items]
Total HTM Securities	620,873	536,767
Gross Unrealized Gains	65,982	74,978
Gross Unrealized Losses	(121)	0
Held-to-maturity Securities, Fair Value	686,734	611,745
Commercial
Schedule of Held-to-maturity Securities [Line Items]
Total HTM Securities	4,523	5,333
Gross Unrealized Gains	0	4
Gross Unrealized Losses	(58)	(50)
Held-to-maturity Securities, Fair Value	4,465	5,287
Agency | Commercial
Schedule of Held-to-maturity Securities [Line Items]
Total HTM Securities	4,523	5,333
Gross Unrealized Gains	0	4
Gross Unrealized Losses	(58)	(50)
Held-to-maturity Securities, Fair Value	$ 4,465	$ 5,287