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FHLB Advances (Schedule Of Maturity And Weighted-Average Interest Rates Of FHLB Advances) (Details) - USD ($)
Dec. 31, 2020
Sep. 30, 2018
FHLB Advances [Abstract]    
2021, Amount  
2022, Amount  
2023, Amount 5,000,000  
2024, Amount  
2025, Amount  
Total, Amount $ 5,000,000 $ 15,000,000.0
2021, Rate  
2022, Rate  
2023, Rate 3.07%  
2024, Rate  
2025, Rate  
Total, Rate 3.07%