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SECURITIES - Additional Information (Details)
$ in Thousands
3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2023
USD ($)
security
Sep. 30, 2022
USD ($)
Sep. 30, 2023
USD ($)
security
Sep. 30, 2022
USD ($)
Dec. 31, 2022
USD ($)
security
Debt and Equity Securities, FV-NI [Line Items]          
Number of securities transferred | security         74
Transfer of debt securities, fair value         $ 213,700
Net unrealized holding gain (loss)         $ 5,600
Reclassification adjustment for realized gains included in net income, tax $ 0 $ 0 $ 11 $ 137  
Number of securities holdings | security 0   0   0
Shareholders equity, percentage 10.00%   10.00%   10.00%
Collateral Pledged          
Debt and Equity Securities, FV-NI [Line Items]          
Securities pledged to public deposits $ 470,900   $ 470,900   $ 561,800