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CONTRACTS AND AGREEMENTS (Details) - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Sep. 30, 2016
Sep. 30, 2015
Brokerage commissions $ 36,202 $ 28,015 $ 130,670 $ 83,780
Percentage Of Average Daily Net Assets 0.16% 0.12% 0.16% 0.12%
Rebalancing Investments Transaction [Member]        
Brokerage commissions     $ 127,245 $ 78,277
Percentage Of Average Daily Net Assets 97.38% 93.43% 97.38% 93.43%
Creation And Redemption Activity [Member]        
Brokerage commissions     $ 3,425 $ 5,503
Percentage Of Average Daily Net Assets 2.62% 6.57% 2.62% 6.57%