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INVESTMENT SECURITIES - CORPORATE BONDS AND MORTGAGE BACKED SECURITIES (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2024 | Dec. 31, 2023
Private label mortgage backed security |  |
Marketable Securities [Line Items] |  |
Securities | $ 1,772 |
Mortgage backed securities and CMOs |  |
Marketable Securities [Line Items] |  |
Gross unrealized losses on available for sale securities | $ 15,000 | $ 14,500

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