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Condensed Schedule of Investments (Parenthetical) | 3 Months Ended
--- | ---
Mar. 31, 2018 USD ($)
Debt Instrument, Collateral Amount | $ 979,150
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills: 1.19%, 04/05/2018 [Member] |
Expiration date | 4/05/2018
Interest Rate | 1.19%
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills: 1.22%, 04/12/2018 [Member] |
Expiration date | 4/12/2018
Interest Rate | 1.22%
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills: 1.23%, 04/19/2018 [Member] |
Expiration date | 4/19/2018
Interest Rate | 1.23%
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills: 1.25%, 04/26/2018 [Member] |
Expiration date | 4/26/2018
Interest Rate | 1.25%
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills: 1.27%, 05/03/2018 [Member] |
Expiration date | 5/03/2018
Interest Rate | 1.27%
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills: 1.32%, 05/10/2018 [Member] |
Expiration date | 5/10/2018
Interest Rate | 1.32%
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills: 1.37%, 05/17/2018 [Member] |
Expiration date | 5/17/2018
Interest Rate | 1.37%
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills: 1.43%, 05/24/2018 [Member] |
Expiration date | 5/24/2018
Interest Rate | 1.43%
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills: 1.43%, 05/31/2018 [Member] |
Expiration date | 5/31/2018
Interest Rate | 1.43%
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills: 1.45%, 06/07/2018 [Member] |
Expiration date | 6/07/2018
Interest Rate | 1.45%
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills: 1.46%, 06/14/2018 [Member] |
Expiration date | 6/14/2018
Interest Rate | 1.46%
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills: 1.49%, 06/21/2018 [Member] |
Expiration date | 6/21/2018
Interest Rate | 1.49%
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills: 1.50%, 06/28/2018 [Member] |
Expiration date | 6/28/2018
Interest Rate | 1.50%
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills: 1.56%, 07/05/2018 [Member] |
Expiration date | 7/05/2018
Interest Rate | 1.56%
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills: 1.56%, 7/12/2018 [Member] |
Expiration date | 7/12/2018
Interest Rate | 1.56%
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills: 1.60%, 7/19/2018 [Member] |
Expiration date | 7/19/2018
Interest Rate | 1.60%
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills: 1.61%, 7/26/2018 [Member] |
Expiration date | 7/26/2018
Interest Rate | 1.61%
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills: 1.63%, 8/02/2018 [Member] |
Expiration date | 8/02/2018
Interest Rate | 1.63%
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills: 1.71%, 8/09/2018 [Member] |
Expiration date | 8/09/2018
Interest Rate | 1.71%
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills: 1.77%, 8/16/2018 [Member] |
Expiration date | 8/16/2018
Interest Rate | 1.77%
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills: 1.82%, 8/23/2018 [Member] |
Expiration date | 8/23/2018
Interest Rate | 1.82%
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills: 1.82%, 8/30/2018 [Member] |
Expiration date | 8/30/2018
Interest Rate | 1.82%
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills: 1.85%, 09/06/2018 [Member] |
Expiration date | 9/06/2018
Interest Rate | 1.85%
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills: 1.90%, 09/13/2018 [Member] |
Expiration date | 9/13/2018
Interest Rate | 1.90%
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills: 1.92%, 09/20/2018 [Member] |
Expiration date | 9/20/2018
Interest Rate | 1.92%
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills: 1.90%, 09/27/2018 [Member] |
Expiration date | 9/27/2018
Interest Rate | 1.90%

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