GOODWILL AND INTANGIBLE ASSETS (Information Concerning Intangible Assets with Finite Life) (Details) - USD ($)	Dec. 31, 2022	Dec. 31, 2021
Finite-Lived Intangible Assets [Line Items]
Total estimated amortization expense	$ 26,761,000
Core Deposits
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	85,491,000	$ 101,724,000
Accumulated Amortization	60,363,000	66,739,000
Total estimated amortization expense	25,128,000	34,985,000
Other amortizable intangibles
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	2,774,000	14,893,000
Accumulated Amortization	1,141,000	6,566,000
Total estimated amortization expense	$ 1,633,000	$ 8,327,000