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CONTRACTS AND AGREEMENTS (Brokerage Commissions) (Details) - USD ($) | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2018 | Jun. 30, 2017 | Jun. 30, 2018 | Jun. 30, 2017
Total commissions accrued to brokers | $ 467 | $ 663 | $ 785 | $ 1,097
Total commissions as annualized percentage of average total net assets | 0.02% | 0.02% | 0.02% | 0.02%
Rebalancing Investments Transaction [Member] |  |  |  |
Total commissions accrued to brokers |  |  | $ 565 | $ 623
Total commissions as annualized percentage of average total net assets | 71.97% | 56.79% | 71.97% | 56.79%
Creation And Redemption Activity [Member] |  |  |  |
Total commissions accrued to brokers |  |  | $ 220 | $ 474
Total commissions as annualized percentage of average total net assets | 28.03% | 43.21% | 28.03% | 43.21%

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- Definition Percentage of Average Daily Net Assets + References No definition available. + Details
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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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- Details
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