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Schedule of Investments (Parenthetical) (USD $) | 12 Months Ended
--- | ---
Dec. 31, 2013 | Dec. 31, 2012
Collateral Amount On Open Futures Contracts | $ 3,548,144 | $ 11,533,650
NYMEX WTI Crude Oil Futures CL February 2014 contracts, expiring January 2014 | Open Cleared Swap and Futures Contracts | Open Futures Contracts, Long |  |
Expiration date | January 2014 |
NYMEX WTI Crude Oil Futures CL March 2014 contracts, expiring February 2014 | Open Cleared Swap and Futures Contracts | Open Futures Contracts, Long |  |
Expiration date | February 2014 |
NYMEX WTI Crude Oil Futures CL April 2014 contracts, expiring March 2014 | Open Cleared Swap and Futures Contracts | Open Futures Contracts, Long |  |
Expiration date | March 2014 |
NYMEX WTI Crude Oil Futures CL May 2014 contracts, expiring April 2014 | Open Cleared Swap and Futures Contracts | Open Futures Contracts, Long |  |
Expiration date | April 2014 |
NYMEX WTI Crude Oil Futures CL June 2014 contracts, expiring May 2014 | Open Cleared Swap and Futures Contracts | Open Futures Contracts, Long |  |
Expiration date | May 2014 |
NYMEX WTI Crude Oil Futures CL July 2014 contracts, expiring June 2014 | Open Cleared Swap and Futures Contracts | Open Futures Contracts, Long |  |
Expiration date | June 2014 |
NYMEX WTI Crude Oil Futures CL August 2014 contracts, expiring July 2014 | Open Cleared Swap and Futures Contracts | Open Futures Contracts, Long |  |
Expiration date | July 2014 |
NYMEX WTI Crude Oil Futures CL September 2014 contracts, expiring August 2014 | Open Cleared Swap and Futures Contracts | Open Futures Contracts, Long |  |
Expiration date | August 2014 |
NYMEX WTI Crude Oil Futures CL October 2014 contracts, expiring September 2014 | Open Cleared Swap and Futures Contracts | Open Futures Contracts, Long |  |
Expiration date | September 2014 |
NYMEX WTI Crude Oil Futures CL November 2014 contracts, expiring October 2014 | Open Cleared Swap and Futures Contracts | Open Futures Contracts, Long |  |
Expiration date | October 2014 |
NYMEX WTI Crude Oil Futures CL December 2014 contracts, expiring November 2014 | Open Cleared Swap and Futures Contracts | Open Futures Contracts, Long |  |
Expiration date | November 2014 |
NYMEX WTI Crude Oil Futures CL January 2015 contracts, expiring December 2014 | Open Cleared Swap and Futures Contracts | Open Futures Contracts, Long |  |
Expiration date | December 2014 |
U.S. Treasury Bill | US Treasury Securities | Cash Equivalents |  |
Interest rate | 0.07% | 0.10%
Expiration date | 3/27/2014 | 1/17/2013
NYMEX Crude Oil Futures CL February 2013 contracts, expiring January 2013 | Open Cleared Swap and Futures Contracts | Open Futures Contracts, Long |  |
Expiration date |  | January 2013
NYMEX Crude Oil Futures CL March 2013 contracts, expiring February 2013 | Open Cleared Swap and Futures Contracts | Open Futures Contracts, Long |  |
Expiration date |  | February 2013
NYMEX Crude Oil Futures CL April 2013 contracts, expiring March 2013 | Open Cleared Swap and Futures Contracts | Open Futures Contracts, Long |  |
Expiration date |  | March 2013
NYMEX Crude Oil Futures CL May 2013 contracts, expiring April 2013 | Open Cleared Swap and Futures Contracts | Open Futures Contracts, Long |  |
Expiration date |  | April 2013
NYMEX Crude Oil Futures CL June 2013 contracts, expiring May 2013 | Open Cleared Swap and Futures Contracts | Open Futures Contracts, Long |  |
Expiration date |  | May 2013
NYMEX Crude Oil Futures CL July 2013 contracts, expiring June 2013 | Open Cleared Swap and Futures Contracts | Open Futures Contracts, Long |  |
Expiration date |  | June 2013
NYMEX Crude Oil Futures CL August 2013 contracts, expiring July 2013 | Open Cleared Swap and Futures Contracts | Open Futures Contracts, Long |  |
Expiration date |  | July 2013
NYMEX Crude Oil Futures CL September 2013 contracts, expiring August 2013 | Open Cleared Swap and Futures Contracts | Open Futures Contracts, Long |  |
Expiration date |  | August 2013
NYMEX Crude Oil Futures CL October 2013 contracts, expiring September 2013 | Open Cleared Swap and Futures Contracts | Open Futures Contracts, Long |  |
Expiration date |  | September 2013
NYMEX Crude Oil Futures CL November 2013 contracts, expiring October 2013 | Open Cleared Swap and Futures Contracts | Open Futures Contracts, Long |  |
Expiration date |  | October 2013
NYMEX Crude Oil Futures CL December 2013 contracts, expiring November 2013 | Open Cleared Swap and Futures Contracts | Open Futures Contracts, Long |  |
Expiration date |  | November 2013
NYMEX Crude Oil Futures CL January 2014 contracts, expiring December 2013 | Open Cleared Swap and Futures Contracts | Open Futures Contracts, Long |  |
Expiration date |  | December 2013

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