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Condensed Schedule of Investments (Parenthetical) (USD $)	6 Months Ended
	Jun. 30, 2014
Collateral Amount On Open Futures Contracts	$ 601,117
U.S. Treasury Bill, 0.03%, 8/28/2014 | US Treasury Securities | Cash Equivalents
Interest rate	0.03%
Expiration date	8/28/2014
U.S. Treasury Bill 0.04%, 10/30/2014 | US Treasury Securities | Cash Equivalents
Interest rate	0.04%
Expiration date	10/30/2014
U.S. Treasury Bill 0.05%, 12/26/2014 | US Treasury Securities | Cash Equivalents
Interest rate	0.05%
Expiration date	12/26/2014
United States | NYMEX WTI Crude Oil Futures CL May 2015 contracts, expiring April 2015 | Open Futures Contracts, Long
Expiration date	April 2015
United States | NYMEX WTI Crude Oil Futures CL June 2015 contracts, expiring May 2015 | Open Futures Contracts, Long
Expiration date	May 2015
United States | NYMEX WTI Crude Oil Futures CL July 2015 contracts, expiring June 2015 | Open Futures Contracts, Long
Expiration date	June 2015
United States | NYMEX WTI Crude Oil Futures CL August 2014 contracts, expiring July 2014 | Open Futures Contracts, Long
Expiration date	July 2014
United States | NYMEX WTI Crude Oil Futures CL September 2014 contracts, expiring August 2014 | Open Futures Contracts, Long
Expiration date	August 2014
United States | NYMEX WTI Crude Oil Futures CL October 2014 contracts, expiring September 2014 | Open Futures Contracts, Long
Expiration date	September 2014
United States | NYMEX WTI Crude Oil Futures CL November 2014 contracts, expiring October 2014 | Open Futures Contracts, Long
Expiration date	October 2014
United States | NYMEX WTI Crude Oil Futures CL December 2014 contracts, expiring November 2014 | Open Futures Contracts, Long
Expiration date	November 2014
United States | NYMEX WTI Crude Oil Futures CL January 2015 contracts, expiring December 2014 | Open Futures Contracts, Long
Expiration date	December 2014
United States | NYMEX WTI Crude Oil Futures CL February 2015 contracts, expiring January 2015 | Open Futures Contracts, Long
Expiration date	January 2015
United States | NYMEX WTI Crude Oil Futures CL March 2015 contracts, expiring February 2015 | Open Futures Contracts, Long
Expiration date	February 2015
United States | NYMEX WTI Crude Oil Futures CL April 2015 contracts, expiring March 2015 | Open Futures Contracts, Long
Expiration date	March 2015

X

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.22(a)(1))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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X

- Definition

The list of dates or date range within which the options may be exercised of the investment subject to option.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 946

-SubTopic 320

-Section S99

-Paragraph 6

-Subparagraph (SX 210.12-14.4(b))

-URI http://asc.fasb.org/extlink&oid=34726532&loc=d3e611322-123010



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 14

-Paragraph 4

-Subparagraph b

-Article 12



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 946

-SubTopic 320

-Section S99

-Paragraph 5

-Subparagraph (SX 210.12-13.5(d))

-URI http://asc.fasb.org/extlink&oid=34726532&loc=d3e611282-123010



Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 13

-Paragraph 5

-Subparagraph d

-Article 12

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- Definition

The collateral amount on open future contracts.

+ References

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