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INVESTMENT SECURITIES - Narrative (Details)
$ in Thousands
3 Months Ended
Mar. 31, 2023
USD ($)
Mar. 31, 2022
USD ($)
security
Dec. 31, 2022
USD ($)
Debt Securities, Available-for-sale [Line Items]      
Investment securities $ 520,232   $ 513,728
Number of investments securities, partially sold | security   1  
Proceeds from sale of investment securities 0 $ 3,075  
Collateral Pledged      
Debt Securities, Available-for-sale [Line Items]      
Investment securities pledged to secure public funds, fair value 428,900   396,800
Equity Securities      
Debt Securities, Available-for-sale [Line Items]      
(Losses) gain on investments (8) 25  
Debt Securities      
Debt Securities, Available-for-sale [Line Items]      
(Losses) gain on investments   22  
Investment securities   3,100  
Proceeds from sale of investment securities   3,100  
Non-agency CMOs      
Debt Securities, Available-for-sale [Line Items]      
(Losses) gain on investments   $ 171  
Investment securities $ 40,891   $ 39,758