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CONTRACTS AND AGREEMENTS (Brokerage Commissions) (Details) - USD ($)	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Floor Brokerage Exchange and Clearance Fees	$ 958	$ 1,595
Percentage Of Average Daily Net Assets	0.03%	0.04%
Rebalancing Investments Transaction [Member]
Floor Brokerage Exchange and Clearance Fees	$ 857	$ 969
Percentage Of Average Daily Net Assets	89.46%	60.78%
Creation And Redemption Activity [Member]
Floor Brokerage Exchange and Clearance Fees	$ 101	$ 626
Percentage Of Average Daily Net Assets	10.54%	39.22%

X

- Definition

Percentage of Average Daily Net Assets

+ References

No definition available.

+ Details

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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

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
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Balance Type:	debit
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X

- Details

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Namespace Prefix:
Data Type:	na
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Period Type:

X

- Details

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Namespace Prefix:
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Period Type: