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Condensed Schedule of Investments	Mar. 31, 2018 USD ($)
Cash Equivalents [Member] | U.S. Treasury Securities [Member]
Market Value	$ 62,741,759
% of Partners' Capital	68.33%
Cash Equivalents [Member] | U.S. Treasury Securities [Member] | U.S. Treasury Bills,1.19%, 4/05/2018
Principal Amount	$ 3,000,000
Market Value	$ 2,999,605
% of Partners' Capital	3.27%
Cash Equivalents [Member] | U.S. Treasury Securities [Member] | U.S. Treasury Bills,1.22%, 4/12/2018
Principal Amount	$ 2,000,000
Market Value	$ 1,999,257
% of Partners' Capital	2.18%
Cash Equivalents [Member] | U.S. Treasury Securities [Member] | U.S. Treasury Bills,1.23%, 4/19/2018
Principal Amount	$ 2,000,000
Market Value	$ 1,998,783
% of Partners' Capital	2.18%
Cash Equivalents [Member] | U.S. Treasury Securities [Member] | U.S. Treasury Bills,1.25%, 4/26/2018
Principal Amount	$ 2,000,000
Market Value	$ 1,998,278
% of Partners' Capital	2.18%
Cash Equivalents [Member] | U.S. Treasury Securities [Member] | U.S. Treasury Bills,1.27%, 5/03/2018
Principal Amount	$ 2,000,000
Market Value	$ 1,997,760
% of Partners' Capital	2.18%
Cash Equivalents [Member] | U.S. Treasury Securities [Member] | U.S. Treasury Bills,1.32%, 5/10/2018
Principal Amount	$ 2,000,000
Market Value	$ 1,997,162
% of Partners' Capital	2.17%
Cash Equivalents [Member] | U.S. Treasury Securities [Member] | U.S. Treasury Bills,1.37%, 5/17/2018
Principal Amount	$ 3,000,000
Market Value	$ 2,994,796
% of Partners' Capital	3.26%
Cash Equivalents [Member] | U.S. Treasury Securities [Member] | U.S. Treasury Bills,1.43%, 5/24/2018
Principal Amount	$ 3,000,000
Market Value	$ 2,993,750
% of Partners' Capital	3.26%
Cash Equivalents [Member] | U.S. Treasury Securities [Member] | U.S. Treasury Bills,1.43%, 5/31/2018
Principal Amount	$ 3,000,000
Market Value	$ 2,992,900
% of Partners' Capital	3.26%
Cash Equivalents [Member] | U.S. Treasury Securities [Member] | U.S. Treasury Bills,1.45%, 6/07/2018
Principal Amount	$ 3,000,000
Market Value	$ 2,991,960
% of Partners' Capital	3.26%
Cash Equivalents [Member] | U.S. Treasury Securities [Member] | U.S. Treasury Bills,1.46%, 6/14/2018
Principal Amount	$ 2,000,000
Market Value	$ 1,994,059
% of Partners' Capital	2.17%
Cash Equivalents [Member] | U.S. Treasury Securities [Member] | U.S. Treasury Bills,1.49%, 6/21/2018
Principal Amount	$ 3,000,000
Market Value	$ 2,990,010
% of Partners' Capital	3.26%
Cash Equivalents [Member] | U.S. Treasury Securities [Member] | U.S. Treasury Bills,1.50%, 6/28/2018
Principal Amount	$ 3,000,000
Market Value	$ 2,989,073
% of Partners' Capital	3.25%
Cash Equivalents [Member] | U.S. Treasury Securities [Member] | U.S. Treasury Bills,1.56%, 7/05/2018
Principal Amount	$ 3,000,000
Market Value	$ 2,987,729
% of Partners' Capital	3.25%
Cash Equivalents [Member] | U.S. Treasury Securities [Member] | U.S. Treasury Bills,1.56%, 7/12/2018
Principal Amount	$ 2,000,000
Market Value	$ 1,991,217
% of Partners' Capital	2.17%
Cash Equivalents [Member] | U.S. Treasury Securities [Member] | U.S. Treasury Bills,1.60%, 7/19/2018
Principal Amount	$ 2,000,000
Market Value	$ 1,990,372
% of Partners' Capital	2.17%
Cash Equivalents [Member] | U.S. Treasury Securities [Member] | U.S. Treasury Bills,1.61%, 7/26/2018
Principal Amount	$ 3,000,000
Market Value	$ 2,984,582
% of Partners' Capital	3.25%
Cash Equivalents [Member] | U.S. Treasury Securities [Member] | U.S. Treasury Bills,1.63%, 8/02/2018
Principal Amount	$ 3,000,000
Market Value	$ 2,983,395
% of Partners' Capital	3.25%
Cash Equivalents [Member] | U.S. Treasury Securities [Member] | U.S. Treasury Bills,1.71%, 8/09/2018
Principal Amount	$ 2,000,000
Market Value	$ 1,987,758
% of Partners' Capital	2.16%
Cash Equivalents [Member] | U.S. Treasury Securities [Member] | U.S. Treasury Bills,1.77%, 8/16/2018
Principal Amount	$ 2,000,000
Market Value	$ 1,986,642
% of Partners' Capital	2.16%
Cash Equivalents [Member] | U.S. Treasury Securities [Member] | U.S. Treasury Bills,1.82%, 8/23/2018
Principal Amount	$ 2,000,000
Market Value	$ 1,985,600
% of Partners' Capital	2.16%
Cash Equivalents [Member] | U.S. Treasury Securities [Member] | U.S. Treasury Bills,1.82%, 8/30/2018
Principal Amount	$ 3,000,000
Market Value	$ 2,977,287
% of Partners' Capital	3.24%
Cash Equivalents [Member] | U.S. Treasury Securities [Member] | U.S. Treasury Bills,1.85%, 9/06/2018
Principal Amount	$ 2,000,000
Market Value	$ 1,983,937
% of Partners' Capital	2.16%
Cash Equivalents [Member] | U.S. Treasury Securities [Member] | U.S. Treasury Bills,1.90%, 9/13/2018
Principal Amount	$ 2,000,000
Market Value	$ 1,982,721
% of Partners' Capital	2.16%
Cash Equivalents [Member] | U.S. Treasury Securities [Member] | U.S. Treasury Bills,1.92%, 9/20/2018
Principal Amount	$ 2,000,000
Market Value	$ 1,981,797
% of Partners' Capital	2.16%
Cash Equivalents [Member] | U.S. Treasury Securities [Member] | U.S. Treasury Bills,1.90%, 9/27/2018
Principal Amount	$ 2,000,000
Market Value	$ 1,981,329
% of Partners' Capital	2.16%
Cash Equivalents [Member] | United States [Member]
Market Value	$ 84,741,759
% of Partners' Capital	92.28%
Cash Equivalents [Member] | United States [Member] | Money Market Funds [Member]
Market Value	$ 22,000,000
% of Partners' Capital	23.95%
Cash Equivalents [Member] | United States [Member] | Money Market Funds [Member] | Fidelity Investments Money Market Funds - Government Portfolio [Member]
Principal Amount	$ 12,000,000
Market Value	$ 12,000,000
% of Partners' Capital	13.07%
Cash Equivalents [Member] | United States [Member] | Money Market Funds [Member] | Goldman Sachs Financial Square Funds - Government Fund - Class FS [Member]
Principal Amount	$ 5,000,000
Market Value	$ 5,000,000
% of Partners' Capital	5.44%
Cash Equivalents [Member] | United States [Member] | Money Market Funds [Member] | Morgan Stanley Institutional Liquidity Funds - Government Portfolio [Member]
Principal Amount	$ 5,000,000
Market Value	$ 5,000,000
% of Partners' Capital	5.44%
Open Futures Contracts - Long [Member] | Foreign Contracts [Member] | ICE Brent Crude Oil Futures CO June 2018 contracts, expiring April 2018 [Member]
Number of Contracts	1,324	[1]
Value/Unrealized Gain (Loss) on Open Commodity Contracts	$ 4,411,970	[1]
Principal Amount	$ 87,394,190	[1]
% of Partners' Capital	4.80%	[1]
[1] Collateral amounted to $11,078,905 on open futures contracts.

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