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Condensed Schedule of Investments	Jun. 30, 2017 USD ($) Contracts
Cash Equivalents [Member] | US Treasury Securities [Member]
Market Value	$ 67,823,388
% of Partners' Capital	58.77%
Cash Equivalents [Member] | US Treasury Securities [Member] | U.S. Treasury Bills,0.62%, 7/06/2017
Principal Amount	$ 3,000,000
Market Value	$ 2,999,744
% of Partners' Capital	2.60%
Cash Equivalents [Member] | US Treasury Securities [Member] | U.S. Treasury Bills,0.59%, 7/13/2017
Principal Amount	$ 3,000,000
Market Value	$ 2,999,415
% of Partners' Capital	2.60%
Cash Equivalents [Member] | US Treasury Securities [Member] | U.S. Treasury Bills,0.61%, 7/20/2017
Principal Amount	$ 2,000,000
Market Value	$ 1,999,361
% of Partners' Capital	1.73%
Cash Equivalents [Member] | US Treasury Securities [Member] | U.S. Treasury Bills,0.60%, 7/27/2017
Principal Amount	$ 3,000,000
Market Value	$ 2,998,711
% of Partners' Capital	2.60%
Cash Equivalents [Member] | US Treasury Securities [Member] | U.S. Treasury Bills,0.63%, 8/03/2017
Principal Amount	$ 3,000,000
Market Value	$ 2,998,281
% of Partners' Capital	2.60%
Cash Equivalents [Member] | US Treasury Securities [Member] | U.S. Treasury Bills,0.61%, 8/10/2017
Principal Amount	$ 2,000,000
Market Value	$ 1,998,644
% of Partners' Capital	1.73%
Cash Equivalents [Member] | US Treasury Securities [Member] | U.S. Treasury Bills,0.65%, 8/17/2017
Principal Amount	$ 2,000,000
Market Value	$ 1,998,303
% of Partners' Capital	1.73%
Cash Equivalents [Member] | US Treasury Securities [Member] | U.S. Treasury Bills,0.67%, 8/24/2017
Principal Amount	$ 2,000,000
Market Value	$ 1,997,990
% of Partners' Capital	1.73%
Cash Equivalents [Member] | US Treasury Securities [Member] | U.S. Treasury Bills,0.76%, 8/31/2017
Principal Amount	$ 2,000,000
Market Value	$ 1,997,441
% of Partners' Capital	1.73%
Cash Equivalents [Member] | US Treasury Securities [Member] | U.S. Treasury Bills,0.84%, 9/07/2017
Principal Amount	$ 2,000,000
Market Value	$ 1,996,827
% of Partners' Capital	1.73%
Cash Equivalents [Member] | US Treasury Securities [Member] | U.S. Treasury Bills,0.86%, 9/14/2017
Principal Amount	$ 2,000,000
Market Value	$ 1,996,417
% of Partners' Capital	1.73%
Cash Equivalents [Member] | US Treasury Securities [Member] | U.S. Treasury Bills,0.87%, 9/21/2017
Principal Amount	$ 2,000,000
Market Value	$ 1,996,037
% of Partners' Capital	1.73%
Cash Equivalents [Member] | US Treasury Securities [Member] | U.S. Treasury Bills,0.89%, 9/28/2017
Principal Amount	$ 2,000,000
Market Value	$ 1,995,599
% of Partners' Capital	1.73%
Cash Equivalents [Member] | US Treasury Securities [Member] | U.S. Treasury Bills,0.90%, 10/05/2017
Principal Amount	$ 3,000,000
Market Value	$ 2,992,840
% of Partners' Capital	2.59%
Cash Equivalents [Member] | US Treasury Securities [Member] | U.S. Treasury Bills,0.92%, 10/12/2017
Principal Amount	$ 3,000,000
Market Value	$ 2,992,146
% of Partners' Capital	2.59%
Cash Equivalents [Member] | US Treasury Securities [Member] | U.S. Treasury Bills,0.91%, 10/19/2017
Principal Amount	$ 3,000,000
Market Value	$ 2,991,704
% of Partners' Capital	2.59%
Cash Equivalents [Member] | US Treasury Securities [Member] | U.S. Treasury Bills,0.95%, 10/26/2017
Principal Amount	$ 2,000,000
Market Value	$ 1,993,825
% of Partners' Capital	1.73%
Cash Equivalents [Member] | US Treasury Securities [Member] | U.S. Treasury Bills,0.97%, 11/02/2017
Principal Amount	$ 2,000,000
Market Value	$ 1,993,352
% of Partners' Capital	1.73%
Cash Equivalents [Member] | US Treasury Securities [Member] | U.S. Treasury Bills,1.01%, 11/09/2017
Principal Amount	$ 4,000,000
Market Value	$ 3,985,372
% of Partners' Capital	3.45%
Cash Equivalents [Member] | US Treasury Securities [Member] | U.S. Treasury Bills,0.98%, 11/16/2017
Principal Amount	$ 3,000,000
Market Value	$ 2,988,730
% of Partners' Capital	2.59%
Cash Equivalents [Member] | US Treasury Securities [Member] | U.S. Treasury Bills,1.05%, 11/24/2017
Principal Amount	$ 3,000,000
Market Value	$ 2,987,286
% of Partners' Capital	2.59%
Cash Equivalents [Member] | US Treasury Securities [Member] | U.S. Treasury Bills,1.05%, 11/30/2017
Principal Amount	$ 3,000,000
Market Value	$ 2,986,763
% of Partners' Capital	2.59%
Cash Equivalents [Member] | US Treasury Securities [Member] | U.S. Treasury Bills,1.08%, 12/07/2017
Principal Amount	$ 3,000,000
Market Value	$ 2,985,823
% of Partners' Capital	2.59%
Cash Equivalents [Member] | US Treasury Securities [Member] | U.S. Treasury Bills,1.09%, 12/14/2017
Principal Amount	$ 3,000,000
Market Value	$ 2,985,060
% of Partners' Capital	2.59%
Cash Equivalents [Member] | US Treasury Securities [Member] | U.S. Treasury Bills,1.11%, 12/21/2017
Principal Amount	$ 3,000,000
Market Value	$ 2,984,142
% of Partners' Capital	2.59%
Cash Equivalents [Member] | US Treasury Securities [Member] | U.S. Treasury Bills,1.10%, 12/28/2017
Principal Amount	$ 3,000,000
Market Value	$ 2,983,575
% of Partners' Capital	2.58%
Cash Equivalents [Member] | United States [Member]
Market Value	$ 87,823,388
% of Partners' Capital	76.10%
Cash Equivalents [Member] | United States [Member] | Money Market Funds [Member]
Market Value	$ 20,000,000
% of Partners' Capital	17.33%
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	10.40%
Cash Equivalents [Member] | United States [Member] | Money Market Funds [Member] | Goldman Sachs Financial Square Funds - Government Fund - Class FS [Member]
Principal Amount	$ 3,000,000
Market Value	$ 3,000,000
% of Partners' Capital	2.60%
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	4.33%
Open Futures Contracts - Long [Member] | United States [Member] | ICE Brent Crude Oil Futures CO September 2017 contracts, expiring July 2017 [Member]
Number of Contracts | Contracts	2,366	[1]
Unrealized Gain (Loss) on Open Commodity Contracts	$ 5,697,000	[1]
% of Partners' Capital	4.94%	[1]
[1] Collateral amounted to $12,049,449 on open futures contracts.

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