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INVESTMENT SECURITIES - Narrative (Details)
$ in Thousands
3 Months Ended
Mar. 31, 2022
USD ($)
security
Dec. 31, 2021
USD ($)
Mar. 31, 2021
USD ($)
Dec. 31, 2020
USD ($)
Debt Securities, Available-for-sale [Line Items]        
Allowance for credit loss | $ $ 0 $ 0 $ 101 $ 112
Unrealized losses | $ 5,253 195    
Expected credit losses | $ 0      
Debt securities, held-to-maturity, allowance for credit loss | $ $ 0 0    
Debt Securities | Available-for-sale Debt Securities        
Debt Securities, Available-for-sale [Line Items]        
Number of securities in security portfolio 426      
Number of securities in unrealized loss position 219      
Debt Securities | Held-to-maturity Securities        
Debt Securities, Available-for-sale [Line Items]        
Number of securities in security portfolio 16      
Number of securities in unrealized loss position 15      
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises | Available-for-sale Debt Securities        
Debt Securities, Available-for-sale [Line Items]        
Number of securities in unrealized loss position 180      
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises | Held-to-maturity Securities        
Debt Securities, Available-for-sale [Line Items]        
Number of securities in unrealized loss position 11      
SBA pool securities        
Debt Securities, Available-for-sale [Line Items]        
Unrealized losses | $ $ 929 69    
SBA pool securities | Available-for-sale Debt Securities        
Debt Securities, Available-for-sale [Line Items]        
Number of securities in unrealized loss position 30      
State, County And Municipal Securities        
Debt Securities, Available-for-sale [Line Items]        
Number of securities in unrealized loss position 6      
Corporate debt securities        
Debt Securities, Available-for-sale [Line Items]        
Unrealized losses | $ $ 150 120    
Corporate debt securities | Available-for-sale Debt Securities        
Debt Securities, Available-for-sale [Line Items]        
Number of securities in unrealized loss position 2      
U.S. government sponsored agency security | Available-for-sale Debt Securities        
Debt Securities, Available-for-sale [Line Items]        
Number of securities in unrealized loss position 1      
State, county and municipal securities        
Debt Securities, Available-for-sale [Line Items]        
Unrealized losses | $ $ 299 0    
State, county and municipal securities | Held-to-maturity Securities        
Debt Securities, Available-for-sale [Line Items]        
Number of securities in unrealized loss position 4      
Collateral Pledged        
Debt Securities, Available-for-sale [Line Items]        
Pledged securities, carrying value | $ $ 314,200 $ 366,700