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CONTRACTS AND AGREEMENTS (Brokerage Commission) (Detail) - USD ($) | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2016 | Jun. 30, 2015 | Jun. 30, 2016 | Jun. 30, 2015
Brokerage commissions | $ 1,603,540 | $ 1,094,815 | $ 3,832,708 | $ 2,282,032
Rebalancing Investments Transaction [Member] |  |  |  |
Brokerage commissions |  |  | $ 3,504,380 | $ 1,877,665
Percentage of average daily net assets | 91.43% | 82.28% | 91.43% | 82.28%
Creation And Redemption Activity [Member] |  |  |  |
Brokerage commissions |  |  | $ 328,328 | $ 404,367
Percentage of average daily net assets | 8.57% | 17.72% | 8.57% | 17.72%
Commission [Member] |  |  |  |
Brokerage commissions |  |  | $ 3,832,708 | $ 2,282,032
Percentage of average daily net assets | 0.22% | 0.19% | 0.22% | 0.19%

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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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