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SECURITIES - Additional Information (Details)
9 Months Ended 12 Months Ended
Sep. 30, 2025
USD ($)
item
Sep. 30, 2024
USD ($)
Dec. 31, 2024
USD ($)
item
Debt Securities, Available-for-Sale [Line Items]      
Debt securities available-for-sale, at fair value $ 407,770,000   $ 390,288,000
Aggregate carrying value 219,124,000   $ 192,671,000
Proceeds from sales of debt securities available-for-sale 0 $ 0  
Net gains and losses on debt securities $ 0 $ 0  
Number of securities in loss position | item 154   167
Percentage decline in value 5.47%   7.36%
Minimum percentage of equity held 10.00%   10.00%
Accrued interest receivable $ 5,075,000   $ 4,993,000
Marketable equity securities, at fair value 1,715,000   1,587,000
Available-for-sale Securities      
Debt Securities, Available-for-Sale [Line Items]      
Accrued interest receivable 2,157,000   2,142,000
Asset Pledged as Collateral      
Debt Securities, Available-for-Sale [Line Items]      
Debt securities available-for-sale, at fair value 258,895,000   251,961,000
Marketable Equity Securities      
Debt Securities, Available-for-Sale [Line Items]      
Marketable equity securities, at fair value $ 1,715,000   $ 1,587,000