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FAIR VALUE OF FINANCIAL INSTRUMENTS (Details 2) - USD ($)
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
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 $ (41,811,240) $ (19,750,710) $ 3,338,310
Change in Unrealized Gain (Loss) on Derivatives Recognized in Income $ (1,095,250) $ (6,375,760) $ (710,660)
Commodity Contract [Member]      
Location of Gain (Loss) on Derivatives Recognized in Income Realized gain (loss) on closed positions