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CONTRACTS AND AGREEMENTS (Brokerage Commission) (Detail) - USD ($) | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2016 | Sep. 30, 2015 | Sep. 30, 2016 | Sep. 30, 2015
Brokerage commissions | $ 1,544,097 | $ 1,327,477 | $ 5,376,805 | $ 3,609,509
Commission [Member] |  |  |  |
Brokerage commissions |  |  | $ 5,376,805 | $ 3,609,509
Percentage of average daily net assets | 0.21% | 0.20% | 0.21% | 0.20%
Rebalancing Investments Transaction [Member] |  |  |  |
Brokerage commissions |  |  | $ 4,920,092 | $ 2,972,195
Percentage of average daily net assets | 91.51% | 82.34% | 91.51% | 82.34%
Creation And Redemption Activity [Member] |  |  |  |
Brokerage commissions |  |  | $ 456,713 | $ 637,314
Percentage of average daily net assets | 8.49% | 17.66% | 8.49% | 17.66%

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- Definition The amount of expense during the period for floor brokerage fees paid to other broker-dealers to execute trades on their behalf, stock exchange fees, order flow fees, and clearance fees. + References No definition available. + Details
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- Details
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