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INVESTMENT SECURITIES - MORTGAGE BACKED SECURITIES AND COLLATERALIZED MORTGAGE SECURITIES (Details) - Mortgage backed securities and CMOs - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2026 | Dec. 31, 2025
Marketable Securities [Line Items] |  |
Carrying value of securities | $ 1.4 |
Gross unrealized losses on available for sale securities | $ 8.0 | $ 7.0

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