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CONTRACTS AND AGREEMENTS -Brokerage Commission (Details) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Brokerage commissions	$ 6,104,865	$ 2,423,017	$ 2,538,611
Commission
Brokerage commissions	$ 6,104,865	$ 2,423,017	$ 2,538,611
Percentage of average daily net assets	0.18%	0.17%	0.14%
Rebalancing Investments Transaction
Brokerage commissions	$ 5,072,915	$ 2,052,263	$ 2,145,268
Percentage of average daily net assets	83.10%	84.70%	84.51%
Creation And Redemption Activity
Brokerage commissions	$ 1,031,950	$ 370,754	$ 393,343
Percentage of average daily net assets	16.90%	15.30%	15.49%

X

- 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.

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X

- Definition

Percentage of Average Daily Net Assets

+ References

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- Details

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