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Securities (Schedule Of Taxable And Non-taxable Components Of Interest Income) (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Mar. 31, 2021
Mar. 31, 2020
Marketable Securities [Abstract]        
Taxable $ 597 $ 1,322 $ 1,242 $ 2,759
Non-taxable 32 60 70 130
Interest income on investment securities $ 629 $ 1,382 $ 1,312 $ 2,889