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CONTRACTS AND AGREEMENTS - Brokerage Commission (Details) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Commissions accrued to brokers	$ 1,879,043	$ 1,155,153	$ 1,424,713
Percentage of commissions accrued	0.47%	0.38%	0.38%
Rebalancing Investments Transaction [Member]
Commissions accrued to brokers	$ 1,636,443	$ 964,567	$ 1,053,158
Percentage of commissions accrued	87.09%	83.50%	73.92%
Creation And Redemption Activity [Member]
Commissions accrued to brokers	$ 242,600	$ 190,586	$ 371,555
Percentage of commissions accrued	12.91%	16.50%	26.08%

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- Definition

Percentage of Average Daily Net Assets

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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.

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No definition available.

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