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SECURITIES - Narrative (Details)
$ in Thousands
3 Months Ended
Mar. 31, 2024
USD ($)
security
Sep. 30, 2023
USD ($)
Mar. 31, 2023
USD ($)
Dec. 31, 2023
USD ($)
SECURITIES        
Number of securities in an unrealized loss position for a period of twelve months or more | security 690      
Number of securities in an unrealized loss position for a period of less than twelve months | security 73      
Debt securities, available-for-sale, accrued interest $ 5,400     $ 6,000
Proceeds from sale of equity securities 20   $ 0  
Impairments of downward adjustments 200      
Adjustment to carrying value of equity securities with no readily determinable fair value 200      
Upward adjustment on equity securities with no readily determinable fair value $ 0     0
Municipal        
SECURITIES        
Percentage of securities with general obligation issue 73.00%      
Corporate        
SECURITIES        
Provision for credit losses increase (decrease)   $ (600) $ 600  
Assets Pledged        
SECURITIES        
Carrying value of securities pledged to secure public and trust deposits $ 388,800     $ 419,400