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GOODWILL AND OTHER INTANGIBLE ASSETS - Components of Other Identifiable Intangible Assets (Details) - USD ($)
$ in Thousands
Mar. 31, 2022
Dec. 31, 2021
Finite-Lived Intangible Assets [Line Items]    
Gross Amount $ 8,415 $ 8,415
Accumulated Amortization 4,524 4,232
Core deposit intangibles    
Finite-Lived Intangible Assets [Line Items]    
Gross Amount 8,390 8,390
Accumulated Amortization 4,500 4,208
Other customer relationship intangibles    
Finite-Lived Intangible Assets [Line Items]    
Gross Amount 25 25
Accumulated Amortization $ 24 $ 24