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CONTRACTS AND AGREEMENTS (Details) - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2015
Jun. 30, 2014
Brokerage commissions $ 30,188 $ 6,641 $ 55,765 $ 10,750
Percentage Of Average Daily Net Assets 0.11% 0.07% 0.11% 0.07%
Rebalancing Investments Transaction [Member]        
Brokerage commissions     $ 51,889 $ 9,683
Percentage Of Average Daily Net Assets 93.05% 90.08% 93.05% 90.08%
Creation And Redemption Activity [Member]        
Brokerage commissions     $ 3,876 $ 1,067
Percentage Of Average Daily Net Assets 6.95% 9.92% 6.95% 9.92%