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FAIR VALUE OF FINANCIAL INSTRUMENTS (Details 2) - USD ($)
9 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Derivatives not Accounted for as Hedging Instruments Futures - Commodity Contracts  
Location of Gain (Loss) on Derivatives Recognized in Income Change in unrealized gain (loss) on open positions  
Realized Gain (Loss) on Derivatives Recognized in Income $ 22,736,110 $ (1,973,510)
Change in Unrealized Gain (Loss) on Derivatives Recognized in Income $ 278,490 $ 73,620
Commodity Contract [Member]    
Location of Gain (Loss) on Derivatives Recognized in Income Realized gain (loss) on closed positions