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CONTRACTS AND AGREEMENTS - Brokerage and Futures Commissions Merchant Agreements (Details) - USD ($) | 3 Months Ended
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Mar. 31, 2021 | Mar. 31, 2020
Total commissions accrued to brokers | $ 787 | $ 131
Total commissions as annualized percentage of average total net assets | 0.04% | 0.02%
Rebalancing Investments Transaction [Member] |  |
Total commissions accrued to brokers | $ 426 | $ 131
Total commissions as annualized percentage of average total net assets | 54.13% | 100.00%
Creation And Redemption Activity [Member] |  |
Total commissions accrued to brokers | $ 361 |
Total commissions as annualized percentage of average total net assets | 45.87% |

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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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