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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