Annual report pursuant to Section 13 and 15(d)

GOODWILL AND INTANGIBLE ASSETS (Narrative) (Details)

v3.20.4
GOODWILL AND INTANGIBLE ASSETS (Narrative) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Finite-Lived Intangible Assets [Line Items]      
Impairment of goodwill or intangible assets $ 0    
Intangible assets, amortization expense $ 16,574 $ 18,521 $ 12,839
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 $ 16,600 $ 18,500 $ 12,800