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FAIR VALUE OF FINANCIAL INSTRUMENTS (Details 2) - USD ($)
 9 Months Ended
Sep. 30, 2016
Sep. 30, 2015
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 $ 12,222,290 $ (21,353,500)
Change in Unrealized Gain (Loss) on Derivatives Recognized in Income $ 15,895,590 $ 1,982,630
Commodity Contract [Member]    
Location of Gain (Loss) on Derivatives Recognized in Income Realized gain (loss) on closed positions