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FAIR VALUE OF FINANCIAL INSTRUMENTS (Details) - USD ($)
Sep. 30, 2017
Dec. 31, 2016
Short-Term Investments $ 87,824,096 $ 96,899,767
Exchange-Traded Futures Contracts    
Foreign Contracts 2,406,500 2,332,880
Fair Value, Inputs, Level 1 [Member]    
Short-Term Investments 87,824,096 96,899,767
Exchange-Traded Futures Contracts    
Foreign Contracts 2,406,500 2,332,880
Fair Value, Inputs, Level 2 [Member]    
Short-Term Investments 0 0
Exchange-Traded Futures Contracts    
Foreign Contracts 0 0
Fair Value, Inputs, Level 3 [Member]    
Short-Term Investments 0 0
Exchange-Traded Futures Contracts    
Foreign Contracts $ 0 $ 0