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Condensed Schedule of Investments (Parenthetical) | 3 Months Ended
--- | ---
Mar. 31, 2018 USD ($)
Collateral Amount On Open Futures Contracts | $ 144,417,387
Cash Equivalents [Member] | United States [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills, 1.19%, 4/05/2018 [Member] |
Interest rate | 1.19%
Expiration date | 4/05/2018
Cash Equivalents [Member] | United States [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills, 1.22%, 4/12/2018 [Member] |
Interest rate | 1.22%
Expiration date | 4/12/2018
Cash Equivalents [Member] | United States [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills, 2.45%, 4/19/2018 [Member] |
Interest rate | 2.45%
Expiration date | 4/19/2018
Cash Equivalents [Member] | United States [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills, 1.25%, 4/26/2018 [Member] |
Interest rate | 1.25%
Expiration date | 4/26/2018
Cash Equivalents [Member] | United States [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills, 1.27%, 5/03/2018 [Member] |
Interest rate | 1.27%
Expiration date | 5/03/2018
Cash Equivalents [Member] | United States [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills, 1.32%, 5/10/2018 [Member] |
Interest rate | 1.32%
Expiration date | 5/10/2018
Cash Equivalents [Member] | United States [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills, 1.37%, 5/17/2018[Member] |
Interest rate | 1.37%
Expiration date | 5/17/2018
Cash Equivalents [Member] | United States [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills, 1.43%, 5/24/2018[Member] |
Interest rate | 1.43%
Expiration date | 5/24/2018
Cash Equivalents [Member] | United States [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills, 1.43%, 5/31/2018[Member] |
Interest rate | 1.43%
Expiration date | 5/31/2018
Cash Equivalents [Member] | United States [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills, 1.45%, 6/07/2018 [Member] |
Interest rate | 1.45%
Expiration date | 6/07/2018
Cash Equivalents [Member] | United States [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills, 1.46%, 6/14/2018[Member] |
Interest rate | 1.46%
Expiration date | 6/14/2018
Cash Equivalents [Member] | United States [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills, 1.49%, 6/21/2018[Member] |
Interest rate | 1.49%
Expiration date | 6/21/2018
Cash Equivalents [Member] | United States [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills, 1.50%, 6/28/2018[Member] |
Interest rate | 1.50%
Expiration date | 6/28/2018
Cash Equivalents [Member] | United States [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills, 1.56%, 7/05/2018[Member] |
Interest rate | 1.56%
Expiration date | 7/05/2018
Cash Equivalents [Member] | United States [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills, 1.56%, 7/12/2018[Member] |
Interest rate | 1.56%
Expiration date | 7/12/2018
Cash Equivalents [Member] | United States [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills, 1.60%, 7/19/2018[Member] |
Interest rate | 1.60%
Expiration date | 7/19/2018
Cash Equivalents [Member] | United States [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills, 1.61%, 7/26/2018[Member] |
Interest rate | 1.61%
Expiration date | 7/26/2018
Cash Equivalents [Member] | United States [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills, 1.63%, 8/02/2018[Member] |
Interest rate | 1.63%
Expiration date | 8/02/2018
Cash Equivalents [Member] | United States [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills, 1.71%, 8/09/2018[Member] |
Interest rate | 1.71%
Expiration date | 8/09/2018
Cash Equivalents [Member] | United States [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills, 1.77%, 8/16/2018[Member] |
Interest rate | 1.77%
Expiration date | 8/16/2018
Cash Equivalents [Member] | United States [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills, 1.82%, 8/23/2018[Member] |
Interest rate | 1.82%
Expiration date | 8/23/2018
Cash Equivalents [Member] | United States [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills, 1.82%, 8/30/2018[Member] |
Interest rate | 1.82%
Expiration date | 8/30/2018
Cash Equivalents [Member] | United States [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills, 1.85%, 9/06/2018[Member] |
Interest rate | 1.85%
Expiration date | 9/06/2018
Cash Equivalents [Member] | United States [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills, 1.90%, 9/13/2018[Member] |
Interest rate | 1.90%
Expiration date | 9/13/2018
Cash Equivalents [Member] | United States [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills, 1.92%, 9/20/2018[Member] |
Interest rate | 1.92%
Expiration date | 9/20/2018
Cash Equivalents [Member] | United States [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills, 1.90%, 9/27/2018[Member] |
Interest rate | 1.90%
Expiration date | 9/27/2018

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