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FAIR VALUE OF FINANCIAL INSTRUMENTS (Details) (USD $)
Dec. 31, 2012
Dec. 31, 2011
Short-Term Investments $ 40,715,676 $ 19,346,002
Exchange-Traded Futures Contracts    
Foreign Contracts 739,330 (916,570)
Fair Value, Inputs, Level 1 [Member]
   
Short-Term Investments 40,715,676 19,346,002
Exchange-Traded Futures Contracts    
Foreign Contracts 739,330 (916,570)
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