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CONTRACTS AND AGREEMENTS - Brokerage Commission (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Commissions accrued to brokers	$ 290,231	$ 298,780	$ 812,893	$ 1,110,685
Percentage of commissions accrued	0.37%	0.40%	0.37%	0.40%
Rebalancing Investments Transaction [Member]
Commissions accrued to brokers			$ 691,311	$ 856,305
Percentage of commissions accrued	85.04%	77.10%	85.04%	77.10%
Creation And Redemption Activity [Member]
Commissions accrued to brokers			$ 121,582	$ 254,380
Percentage of commissions accrued	14.96%	22.90%	14.96%	22.90%

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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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