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Nature of Operations and Summary of Significant Accounting Policies Bank-Owned Life Insurance (Details) - USD ($)
$ in Millions
Dec. 31, 2023
Dec. 31, 2022
Organization, Consolidation and Presentation of Financial Statements [Abstract]    
Bank owned life insurance death benefits $ 133.7 $ 133.8
Borrowings against cash surrender value of bank owned life insurance $ 0.0 $ 0.0