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MORTGAGE SERVICING RIGHTS (Fair Market Value And Key Assumptions Used In Determining Fair Market Value of Mortgage Servicing Rights) (Details) - Mortgage servicing rights
$ in Thousands
Mar. 31, 2024
USD ($)
Dec. 31, 2023
USD ($)
Dec. 31, 2022
USD ($)
Finite-Lived Intangible Assets [Line Items]      
Fair market value $ 12,134 $ 12,185 $ 12,061
Weighted-average discount rate      
Finite-Lived Intangible Assets [Line Items]      
Measurement input 0.095 0.095  
Weighted-average prepayment speed assumption      
Finite-Lived Intangible Assets [Line Items]      
Measurement input 0.113 0.112