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CONTRACTS AND AGREEMENTS (Brokerage Commission) (Detail) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Brokerage commissions	$ 1,603,540	$ 1,094,815	$ 3,832,708	$ 2,282,032
Rebalancing Investments Transaction [Member]
Brokerage commissions			$ 3,504,380	$ 1,877,665
Percentage of average daily net assets	91.43%	82.28%	91.43%	82.28%
Creation And Redemption Activity [Member]
Brokerage commissions			$ 328,328	$ 404,367
Percentage of average daily net assets	8.57%	17.72%	8.57%	17.72%
Commission [Member]
Brokerage commissions			$ 3,832,708	$ 2,282,032
Percentage of average daily net assets	0.22%	0.19%	0.22%	0.19%

X

- 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.

+ References

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X

- Definition

Percentage of Average Daily Net Assets

+ References

No definition available.

+ Details

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X

- Details

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- Details

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- Details

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