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INVESTMENT SECURITIES - Narrative (Details)
$ in Thousands
6 Months Ended
Jun. 30, 2023
USD ($)
security
Mar. 31, 2023
USD ($)
Dec. 31, 2022
USD ($)
Jun. 30, 2022
USD ($)
Mar. 31, 2022
USD ($)
Dec. 31, 2021
USD ($)
Debt Securities, Available-for-sale [Line Items]            
Allowance for credit loss | $ $ 82 $ 82 $ 75 $ 88 $ 0 $ 0
Unrealized losses | $ 64,400   59,134      
Expected credit losses | $ 0          
Debt securities, held-to-maturity, allowance for credit loss | $ $ 0   0      
Debt Securities            
Debt Securities, Available-for-sale [Line Items]            
Number of securities in portfolio | security 429          
Number of securities in unrealized loss position | security 423          
Number of securities in portfolio | security 27          
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises            
Debt Securities, Available-for-sale [Line Items]            
Number of securities in unrealized loss position | security 327          
Number of securities in unrealized loss position | security 21          
SBA pool securities            
Debt Securities, Available-for-sale [Line Items]            
Number of securities in unrealized loss position | security 30          
Allowance for credit loss | $ $ 0   0      
Unrealized losses | $ $ 1,976   2,027      
State, County And Municipal Securities            
Debt Securities, Available-for-sale [Line Items]            
Number of securities in unrealized loss position | security 31          
Corporate debt securities            
Debt Securities, Available-for-sale [Line Items]            
Number of securities in unrealized loss position | security 6          
Allowance for credit loss | $ $ 82   75      
Unrealized losses | $ $ 760   396      
U.S. government sponsored agency security            
Debt Securities, Available-for-sale [Line Items]            
Number of securities in unrealized loss position | security 1          
State, county and municipal securities            
Debt Securities, Available-for-sale [Line Items]            
Number of securities in unrealized loss position | security 28          
Number of securities in unrealized loss position | security 6          
Allowance for credit loss | $ $ 0   0      
Unrealized losses | $ 1,113   1,180      
Collateral Pledged            
Debt Securities, Available-for-sale [Line Items]            
Pledged securities, carrying value | $ $ 860,600   $ 861,600