Annual report pursuant to Section 13 and 15(d)

GOODWILL AND INTANGIBLE ASSETS (Narrative) (Details)

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GOODWILL AND INTANGIBLE ASSETS (Narrative) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Finite-Lived Intangible Assets [Line Items]      
Impairment of goodwill or intangible assets $ 0    
Intangible assets, amortization expense $ 13,904 $ 16,574 $ 18,521
Minimum      
Finite-Lived Intangible Assets [Line Items]      
Intangible assets, amortization period (years) 4 years    
Maximum      
Finite-Lived Intangible Assets [Line Items]      
Intangible assets, amortization period (years) 10 years    
Core Deposits | Minimum      
Finite-Lived Intangible Assets [Line Items]      
Intangible assets, amortization period (years) 4 years    
Core Deposits | Maximum      
Finite-Lived Intangible Assets [Line Items]      
Intangible assets, amortization period (years) 10 years    
Other amortizable intangibles | Minimum      
Finite-Lived Intangible Assets [Line Items]      
Intangible assets, amortization period (years) 4 years    
Other amortizable intangibles | Maximum      
Finite-Lived Intangible Assets [Line Items]      
Intangible assets, amortization period (years) 10 years    
Core Deposits and Other Intangible Assets      
Finite-Lived Intangible Assets [Line Items]      
Intangible assets, amortization expense $ 13,900 $ 16,600 $ 18,500