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Summary Of Significant Accounting Policies (Summary Of Reconciliation Of Derivative Contracts Classified As Level 3 Measurements) (Details)
12 Months Ended
Sep. 30, 2017
USD ($)
Accounting Policies [Abstract]  
Net Asset (Liability) Balance of Level 3 as of October 1, 2016 $ (316,658)
Total gains or (losses) included in earnings 460,061
Purchases, issuances and settlements 8,150
Net Asset (Liability) Balance of Level 3 as of September 30, 2017 $ 151,553