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CONTRACTS AND AGREEMENTS - Brokerage Commissions (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Brokerage commissions	$ 60,407	$ 161,652	$ 227,185	$ 413,504
Percentage Of Average Daily Net Assets	0.10%	0.20%	0.10%	0.20%
Rebalancing Investments Transaction [Member]
Brokerage commissions			$ 214,136	$ 396,633
Percentage Of Average Daily Net Assets	94.26%	95.92%	94.26%	95.92%
Creation And Redemption Activity [Member]
Brokerage commissions			$ 13,049	$ 16,871
Percentage Of Average Daily Net Assets	5.74%	4.08%	5.74%	4.08%

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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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