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Condensed Schedule of Investments	Jun. 30, 2018 USD ($)
Cash Equivalents [Member]
Market Value	$ 97,176,693
% of Partners' Capital	92.10%
Cash Equivalents [Member] | United States Treasury Obligations [Member]
Market Value	$ 62,676,693
% of Partners' Capital	59.40%
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills,1.56%, 7/05/2018
Principal Amount	$ 3,000,000
Market Value	$ 2,999,483
% of Partners' Capital	2.84%
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills,1.56%, 7/12/2018
Principal Amount	$ 2,000,000
Market Value	$ 1,999,053
% of Partners' Capital	1.89%
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills,1.60%, 7/19/2018
Principal Amount	$ 2,000,000
Market Value	$ 1,998,410
% of Partners' Capital	1.89%
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills,1.61%, 7/26/2018
Principal Amount	$ 3,000,000
Market Value	$ 2,996,677
% of Partners' Capital	2.84%
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills,1.63%, 8/02/2018
Principal Amount	$ 3,000,000
Market Value	$ 2,995,680
% of Partners' Capital	2.84%
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills,1.71%, 8/09/2018
Principal Amount	$ 2,000,000
Market Value	$ 1,996,327
% of Partners' Capital	1.89%
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills,1.77%, 8/16/2018
Principal Amount	$ 2,000,000
Market Value	$ 1,995,515
% of Partners' Capital	1.89%
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills,1.82%, 8/23/2018
Principal Amount	$ 2,000,000
Market Value	$ 1,994,700
% of Partners' Capital	1.89%
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills,1.82%, 8/30/2018
Principal Amount	$ 3,000,000
Market Value	$ 2,990,975
% of Partners' Capital	2.84%
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills,1.85%, 9/06/2018
Principal Amount	$ 2,000,000
Market Value	$ 1,993,188
% of Partners' Capital	1.89%
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills,1.90%, 9/13/2018
Principal Amount	$ 2,000,000
Market Value	$ 1,992,251
% of Partners' Capital	1.89%
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills,1.92%, 9/20/2018
Principal Amount	$ 2,000,000
Market Value	$ 1,991,427
% of Partners' Capital	1.89%
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills,1.90%, 9/27/2018
Principal Amount	$ 2,000,000
Market Value	$ 1,990,821
% of Partners' Capital	1.89%
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills,1.87%, 10/04/2018
Principal Amount	$ 3,000,000
Market Value	$ 2,985,315
% of Partners' Capital	2.83%
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills,1.90%, 10/11/2018
Principal Amount	$ 2,000,000
Market Value	$ 1,989,347
% of Partners' Capital	1.89%
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills,1.97%, 10/18/2018
Principal Amount	$ 2,000,000
Market Value	$ 1,988,192
% of Partners' Capital	1.88%
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills,2.00%, 10/25/2018
Principal Amount	$ 2,000,000
Market Value	$ 1,987,240
% of Partners' Capital	1.88%
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills,2.00%, 11/01/2018
Principal Amount	$ 2,000,000
Market Value	$ 1,986,470
% of Partners' Capital	1.88%
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills,2.03%, 11/08/2018
Principal Amount	$ 2,000,000
Market Value	$ 1,985,519
% of Partners' Capital	1.88%
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills,2.05%, 11/15/2018
Principal Amount	$ 3,000,000
Market Value	$ 2,976,824
% of Partners' Capital	2.82%
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills,2.07%, 11/23/2018
Principal Amount	$ 3,000,000
Market Value	$ 2,975,229
% of Partners' Capital	2.82%
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills,2.05%, 11/29/2018
Principal Amount	$ 3,000,000
Market Value	$ 2,974,519
% of Partners' Capital	2.82%
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills,2.09%, 12/06/2018
Principal Amount	$ 2,000,000
Market Value	$ 1,981,830
% of Partners' Capital	1.88%
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills,2.06%, 12/13/2018
Principal Amount	$ 3,000,000
Market Value	$ 2,971,950
% of Partners' Capital	2.82%
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills,2.09%, 12/20/2018
Principal Amount	$ 3,000,000
Market Value	$ 2,970,330
% of Partners' Capital	2.82%
Cash Equivalents [Member] | United States Treasury Obligations [Member] | U.S. Treasury Bills,2.07%, 12/27/2018
Principal Amount	$ 3,000,000
Market Value	$ 2,969,421
% of Partners' Capital	2.81%
Cash Equivalents [Member] | United States - Money Market Funds [Member]
Market Value	$ 34,500,000
% of Partners' Capital	32.70%
Cash Equivalents [Member] | United States - Money Market Funds [Member] | Fidelity Investments Money Market Funds - Government Portfolio [Member]
Principal Amount	$ 14,000,000
Market Value	$ 14,000,000
% of Partners' Capital	13.27%
Cash Equivalents [Member] | United States - Money Market Funds [Member] | Goldman Sachs Financial Square Funds - Government Fund - Class FS [Member]
Principal Amount	$ 12,000,000
Market Value	$ 12,000,000
% of Partners' Capital	11.37%
Cash Equivalents [Member] | United States - Money Market Funds [Member] | Morgan Stanley Institutional Liquidity Funds - Government Portfolio [Member]
Principal Amount	$ 8,500,000
Market Value	$ 8,500,000
% of Partners' Capital	8.06%
Open Futures Contracts - Long [Member] | Foreign Contracts [Member] | ICE Brent Crude Oil Futures CO September 2018 contracts, expiring July 2018 [Member]
Number of Contracts	1,332	[1]
Value/Unrealized Gain (Loss) on Open Commodity Contracts	$ 6,636,860	[1]
Principal Amount	$ 98,897,500	[1]
% of Partners' Capital	6.29%	[1]
[1] Collateral amounted to $8,492,982 on open futures contracts.

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