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CONTRACTS AND AGREEMENTS - Brokerage Commission (Details) - USD ($) | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2019 | Jun. 30, 2018 | Jun. 30, 2019 | Jun. 30, 2018
Commissions accrued to brokers | $ 251,098 | $ 366,890 | $ 522,662 | $ 811,905
Percentage of commissions accrued | 0.37% | 0.41% | 0.37% | 0.41%
Rebalancing Investments Transaction [Member] |  |  |  |
Commissions accrued to brokers |  |  | $ 436,630 | $ 607,451
Percentage of commissions accrued | 83.54% | 74.82% | 83.54% | 74.82%
Creation And Redemption Activity [Member] |  |  |  |
Commissions accrued to brokers |  |  | $ 86,032 | $ 204,454
Percentage of commissions accrued | 16.46% | 25.18% | 16.46% | 25.18%

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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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