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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, 2020
Mar. 31, 2019
Mar. 31, 2020
Mar. 31, 2019
Marketable Securities [Abstract]        
Taxable $ 1,322 $ 1,419 $ 2,759 $ 2,767
Non-taxable 60 86 130 179
Interest income on investment securities $ 1,382 $ 1,505 $ 2,889 $ 2,946