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Derivatives (Summary Of Derivative Contracts) (Details) - USD ($)
Mar. 31, 2020
Sep. 30, 2019
Derivative Instruments And Hedging Activities Disclosure [Abstract]    
Gross amounts recognized - Current Assets [1] $ 4,216,915 $ 2,256,639
Net presentation on Condensed Balance Sheets - Current Assets [1] $ 4,216,915 2,256,639
Gross amounts recognized - Non-Current Assets [1]   237,505
Net presentation on Condensed Balance Sheets - Non-Current Assets [1]   $ 237,505
[1] See Note 11: Fair Value Measurements for further disclosures regarding fair value of financial instruments.