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FAIR VALUE OF FINANCIAL INSTRUMENTS (Fair Value of Derivative Instruments) (Details) - USD ($)
Sep. 30, 2016
Dec. 31, 2015
Commodity Contracts [Member] | Assets [Member] | Future [Member]    
Derivatives, Fair Value [Line Items]    
Derivatives not Accounted for as Hedging Instruments $ 1,003,879 $ (2,421,976)