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Condensed Schedule of Investments [Parenthetical] | 3 Months Ended
--- | ---
Mar. 31, 2017 USD ($)
Collateral amount on open futures contracts | $ 7,993,396
Cash Equivalents [Member] | United States [Member] | U.S. Treasury Bills,0.46%, 4/06/2017 | Us Treasury Securities [Member] |
Interest rate | 0.46%
Expiration date | 4/06/2017
Cash Equivalents [Member] | United States [Member] | U.S. Treasury Bills,0.47%, 4/13/2017 | Us Treasury Securities [Member] |
Interest rate | 0.47%
Expiration date | 4/13/2017
Cash Equivalents [Member] | United States [Member] | U.S. Treasury Bills,0.46%, 4/20/2017 | Us Treasury Securities [Member] |
Interest rate | 0.46%
Expiration date | 4/20/2017
Cash Equivalents [Member] | United States [Member] | U.S. Treasury Bills,0.47%, 4/27/2017 | Us Treasury Securities [Member] |
Interest rate | 0.47%
Expiration date | 4/27/2017
Cash Equivalents [Member] | United States [Member] | U.S. Treasury Bills,0.49%, 5/04/2017 | Us Treasury Securities [Member] |
Interest rate | 0.49%
Expiration date | 5/04/2017
Cash Equivalents [Member] | United States [Member] | U.S. Treasury Bills,0.55%, 5/11/2017 | Us Treasury Securities [Member] |
Interest rate | 0.55%
Expiration date | 5/11/2017
Cash Equivalents [Member] | United States [Member] | U.S. Treasury Bills,0.60%, 5/18/2017 | Us Treasury Securities [Member] |
Interest rate | 0.60%
Expiration date | 5/18/2017
Cash Equivalents [Member] | United States [Member] | U.S. Treasury Bills,0.61%, 5/25/2017 | Us Treasury Securities [Member] |
Interest rate | 0.61%
Expiration date | 5/25/2017
Cash Equivalents [Member] | United States [Member] | U.S. Treasury Bills,0.60%, 6/01/2017 | Us Treasury Securities [Member] |
Interest rate | 0.60%
Expiration date | 6/01/2017
Cash Equivalents [Member] | United States [Member] | U.S. Treasury Bills,0.62%, 6/08/2017 | Us Treasury Securities [Member] |
Interest rate | 0.62%
Expiration date | 6/08/2017
Cash Equivalents [Member] | United States [Member] | U.S. Treasury Bills,0.65%, 6/15/2017 | Us Treasury Securities [Member] |
Interest rate | 0.65%
Expiration date | 6/15/2017
Cash Equivalents [Member] | United States [Member] | U.S. Treasury Bills,0.64%, 6/22/2017 | Us Treasury Securities [Member] |
Interest rate | 0.64%
Expiration date | 6/22/2017
Cash Equivalents [Member] | United States [Member] | U.S. Treasury Bills,0.60%, 6/29/2017 | Us Treasury Securities [Member] |
Interest rate | 0.60%
Expiration date | 6/29/2017
Cash Equivalents [Member] | United States [Member] | U.S. Treasury Bills,0.62%, 7/06/2017 | Us Treasury Securities [Member] |
Interest rate | 0.62%
Expiration date | 7/06/2017
Cash Equivalents [Member] | United States [Member] | U.S. Treasury Bills,0.59%, 1/13/2017 | Us Treasury Securities [Member] |
Interest rate | 0.59%
Expiration date | 7/13/2017
Cash Equivalents [Member] | United States [Member] | U.S. Treasury Bills,0.61%, 7/20/2017 | Us Treasury Securities [Member] |
Interest rate | 0.61%
Expiration date | 7/20/2017
Cash Equivalents [Member] | United States [Member] | U.S. Treasury Bills,0.60%, 7/27/2017 | Us Treasury Securities [Member] |
Interest rate | 0.60%
Expiration date | 7/27/2017
Cash Equivalents [Member] | United States [Member] | U.S. Treasury Bills,0.63%, 8/03/2017 | Us Treasury Securities [Member] |
Interest rate | 0.63%
Expiration date | 8/03/2017
Cash Equivalents [Member] | United States [Member] | U.S. Treasury Bills,0.61%, 8/10/2017 | Us Treasury Securities [Member] |
Interest rate | 0.61%
Expiration date | 8/10/2017
Cash Equivalents [Member] | United States [Member] | U.S. Treasury Bills,0.65%, 8/17/2017 | Us Treasury Securities [Member] |
Interest rate | 0.65%
Expiration date | 8/17/2017
Cash Equivalents [Member] | United States [Member] | U.S. Treasury Bills,0.67%, 8/24/2017 | Us Treasury Securities [Member] |
Interest rate | 0.67%
Expiration date | 8/24/2017
Cash Equivalents [Member] | United States [Member] | U.S. Treasury Bills,0.76%, 8/31/2017 | Us Treasury Securities [Member] |
Interest rate | 0.76%
Expiration date | 8/31/2017
Cash Equivalents [Member] | United States [Member] | U.S. Treasury Bills,0.84%, 9/07/2017 | Us Treasury Securities [Member] |
Interest rate | 0.84%
Expiration date | 9/07/2017
Cash Equivalents [Member] | United States [Member] | U.S. Treasury Bills,0.86%, 9/14/2017 | Us Treasury Securities [Member] |
Interest rate | 0.86%
Expiration date | 9/14/2017
Cash Equivalents [Member] | United States [Member] | U.S. Treasury Bills,0.87%, 9/21/2017 | Us Treasury Securities [Member] |
Interest rate | 0.87%
Expiration date | 9/21/2017
Cash Equivalents [Member] | United States [Member] | U.S. Treasury Bills,0.89%, 9/28/2017 | Us Treasury Securities [Member] |
Interest rate | 0.89%
Expiration date | 9/28/2017

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