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FAIR VALUE OF FINANCIAL INSTRUMENTS (Details 2) (USD $)
 9 Months Ended
Sep. 30, 2013
Sep. 30, 2012
Derivatives not Accounted for as Hedging Instruments Futures - Commodity   Contracts  
Location of Gain or (Loss) on Derivatives Recognized in Income Change in unrealized gain (loss) on open positions  
Realized Gain or (Loss) on Derivatives Recognized in Income $ 3,812,980 $ 4,019,700
Change in Unrealized Gain or (Loss) on Derivatives Recognized in Income $ (2,378,680) $ 480,220
Commodity Contract [Member]
    
Location of Gain or (Loss) on Derivatives Recognized in Income Realized gain on closed positions