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CONTRACTS AND AGREEMENTS (Brokerage Commission) (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Commissions accrued to brokers	$ 298,780	$ 403,584	$ 1,110,685	$ 1,204,240
Percentage of commissions accrued	0.40%	0.34%	0.40%	0.34%
Rebalancing Investments Transaction [Member]
Commissions accrued to brokers			$ 856,305	$ 998,598
Percentage of commissions accrued	77.10%	82.92%	77.10%	82.92%
Creation And Redemption Activity [Member]
Commissions accrued to brokers			$ 254,380	$ 205,642
Percentage of commissions accrued	22.90%	17.08%	22.90%	17.08%

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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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