GOODWILL AND INTANGIBLE ASSETS (Information Concerning Intangible Assets with Finite Life) (Details) - USD ($)	Dec. 31, 2023	Dec. 31, 2022
Finite-Lived Intangible Assets [Line Items]
Total estimated amortization expense	$ 19,183,000
Core Deposits
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	85,491,000	$ 85,491,000
Accumulated Amortization	68,599,000	60,363,000
Total estimated amortization expense	16,892,000	25,128,000
Other amortizable intangibles
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	3,977,000	2,774,000
Accumulated Amortization	1,686,000	1,141,000
Total estimated amortization expense	$ 2,291,000	$ 1,633,000