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Derivatives (Summary Of Derivative Contracts) (Details) - USD ($)
Dec. 31, 2020
Sep. 30, 2020
Derivative Instruments And Hedging Activities Disclosure [Abstract]    
Gross amounts recognized - Current Assets [1] $ 201,842 $ 864,466
Offsetting adjustments - Current Assets [1] (201,842) (864,466)
Gross amounts recognized - Non-Current Assets [1] 93,019  
Offsetting adjustments - Non-Current Assets [1] (93,019)  
Gross amounts recognized - Current Liabilities [1] 1,391,119 1,146,408
Offsetting adjustments - Current Liabilities [1] (201,842) (864,466)
Derivative contracts, net [1] 1,189,277 281,942
Gross amounts recognized - Non-Current Liabilities [1] 478,739 425,705
Offsetting adjustments - Non-Current Liabilities [1] (93,019)  
Derivative contracts, net [1] $ 385,720 $ 425,705
[1] See Note 11: Fair Value Measurements for further disclosures regarding fair value of financial instruments.