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CONTRACTS AND AGREEMENTS (Brokerage Commission) (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Commissions accrued to brokers	$ 366,890	$ 380,958	$ 811,905	$ 800,656
Percentage of commissions accrued	0.41%	0.34%	0.41%	0.34%
Rebalancing Investments Transaction [Member]
Commissions accrued to brokers			$ 607,451	$ 647,003
Percentage of commissions accrued	74.82%	80.81%	74.82%	80.81%
Creation And Redemption Activity [Member]
Commissions accrued to brokers			$ 204,454	$ 153,653
Percentage of commissions accrued	25.18%	19.19%	25.18%	19.19%

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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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- Details

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