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INVESTMENT SECURITIES - Narrative (Details)
$ in Thousands
12 Months Ended
Dec. 31, 2021
USD ($)
security
branch
Dec. 31, 2020
USD ($)
Dec. 31, 2019
USD ($)
Debt Securities, Available-for-sale [Line Items]      
Current-period provision for expected credit losses | $ $ (112) $ 112  
Debt securities, available-for-sale, accumulated gross unrealized loss, before tax | $ $ (195) (443)  
Debt Securities      
Debt Securities, Available-for-sale [Line Items]      
Number of securities in security portfolio 431    
Number of securities in unrealized loss position 11    
Debt Securities | Held-to-maturity Securities      
Debt Securities, Available-for-sale [Line Items]      
Number of securities in security portfolio 14    
Number of securities in unrealized loss position 13    
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises      
Debt Securities, Available-for-sale [Line Items]      
Number of securities in unrealized loss position 4    
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises | Available-for-sale Securities      
Debt Securities, Available-for-sale [Line Items]      
Number of securities in unrealized loss position | branch 11    
SBA pool securities      
Debt Securities, Available-for-sale [Line Items]      
Number of securities in unrealized loss position 5    
Debt securities, available-for-sale, accumulated gross unrealized loss, before tax | $ $ (69) (96)  
Corporate debt securities      
Debt Securities, Available-for-sale [Line Items]      
Number of securities in unrealized loss position 2    
Debt securities, available-for-sale, accumulated gross unrealized loss, before tax | $ $ (120) (233)  
State, county and municipal securities      
Debt Securities, Available-for-sale [Line Items]      
Debt securities, available-for-sale, accumulated gross unrealized loss, before tax | $ $ 0 0  
State, county and municipal securities | Available-for-sale Securities      
Debt Securities, Available-for-sale [Line Items]      
Number of securities in unrealized loss position | branch 2    
Collateral Pledged      
Debt Securities, Available-for-sale [Line Items]      
Pledged securities, carrying value | $   $ 366,700 $ 438,700