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Derivative Instruments (Schedule of Derivatives Instruments Statements of Financial Performance and Financial Position) (Details) - USD ($)
Oct. 31, 2019
Oct. 31, 2018
Derivatives, Fair Value [Line Items]    
Derivative asset, fair value $ 469,740 $ 942,885
Not designated as hedging instrument | Commodity Contract    
Derivatives, Fair Value [Line Items]    
In gain position 124,069 0
In loss position (775,887) (2,280,280)
Deposits with broker $ 1,121,558 $ 3,223,165