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Condensed Schedule of Investments | Jun. 30, 2017 USD ($)
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United State [Member] | Open Futures Contracts, Long [Member] |  |
Number of Contracts | 310 | [1]
Unrealized Gain (Loss) on Open Commodity Contracts | $ (313,469) | [1]
% of Partners' Capital | (3.29%) | [1]
United State [Member] | Open Futures Contracts, Long [Member] | NYMEX Natural Gas Futures NG August 2017 contracts, expiring July 2017 [Member] |  |
Number of Contracts | 26 |
Unrealized Gain (Loss) on Open Commodity Contracts | $ (21,719) |
% of Partners' Capital | (0.23%) |
United State [Member] | Open Futures Contracts, Long [Member] | NYMEX Natural Gas Futures NG September 2017 contracts, expiring August 2017 [Member] |  |
Number of Contracts | 26 |
Unrealized Gain (Loss) on Open Commodity Contracts | $ 17,974 |
% of Partners' Capital | 0.19% |
United State [Member] | Open Futures Contracts, Long [Member] | NYMEX Natural Gas Futures NG October 2017 contracts, expiring September 2017 [Member] |  |
Number of Contracts | 25 |
Unrealized Gain (Loss) on Open Commodity Contracts | $ (3,458) |
% of Partners' Capital | (0.04%) |
United State [Member] | Open Futures Contracts, Long [Member] | NYMEX Natural Gas Futures NG November 2017 contracts, expiring October 2017 [Member] |  |
Number of Contracts | 26 |
Unrealized Gain (Loss) on Open Commodity Contracts | $ (59,087) |
% of Partners' Capital | (0.62%) |
United State [Member] | Open Futures Contracts, Long [Member] | NYMEX Natural Gas Futures NG December 2017 contracts, expiring November 2017 [Member] |  |
Number of Contracts | 26 |
Unrealized Gain (Loss) on Open Commodity Contracts | $ 12,106 |
% of Partners' Capital | 0.13% |
United State [Member] | Open Futures Contracts, Long [Member] | NYMEX Natural Gas Futures NG January 2018 contracts, expiring December 2017 [Member] |  |
Number of Contracts | 26 |
Unrealized Gain (Loss) on Open Commodity Contracts | $ (77,466) |
% of Partners' Capital | (0.81%) |
United State [Member] | Open Futures Contracts, Long [Member] | NYMEX Natural Gas Futures NG February 2018 contracts, expiring January 2018 [Member] |  |
Number of Contracts | 26 |
Unrealized Gain (Loss) on Open Commodity Contracts | $ (85,465) |
% of Partners' Capital | (0.90%) |
United State [Member] | Open Futures Contracts, Long [Member] | NYMEX Natural Gas Futures NG March 2018 contracts, expiring February 2018 [Member] |  |
Number of Contracts | 25 |
Unrealized Gain (Loss) on Open Commodity Contracts | $ (58,035) |
% of Partners' Capital | (0.61%) |
United State [Member] | Open Futures Contracts, Long [Member] | NYMEX Natural Gas Futures NG April 2018 contracts, expiring March 2018 [Member] |  |
Number of Contracts | 26 |
Unrealized Gain (Loss) on Open Commodity Contracts | $ (1,066) |
% of Partners' Capital | (0.01%) |
United State [Member] | Open Futures Contracts, Long [Member] | NYMEX Natural Gas Futures NG May 2018 contracts, expiring April 2018 [Member] |  |
Number of Contracts | 26 |
Unrealized Gain (Loss) on Open Commodity Contracts | $ (9,967) |
% of Partners' Capital | (0.10%) |
United State [Member] | Open Futures Contracts, Long [Member] | NYMEX Natural Gas Futures NG June 2018 contracts, expiring May 2018 [Member] |  |
Number of Contracts | 26 |
Unrealized Gain (Loss) on Open Commodity Contracts | $ (22,976) |
% of Partners' Capital | (0.24%) |
United State [Member] | Open Futures Contracts, Long [Member] | NYMEX Natural Gas Futures NG July 2018 contracts, expiring June 2018 [Member] |  |
Number of Contracts | 26 |
Unrealized Gain (Loss) on Open Commodity Contracts | $ (4,310) |
% of Partners' Capital | (0.05%) |
United State [Member] | Money Market Funds [Member] |  |
Market Value | $ 3,600,000 |
% of Partners' Capital | 37.81% |
United State [Member] | Money Market Funds [Member] | Fidelity Investments Money Market Funds - Government Portfolio [Member] |  |
Principal Amount | $ 1,600,000 |
Market Value | $ 1,600,000 |
% of Partners' Capital | 16.81% |
United State [Member] | Money Market Funds [Member] | Goldman Sachs Financial Square Funds - Government Fund - Class FS [Member] |  |
Principal Amount | $ 1,000,000 |
Market Value | $ 1,000,000 |
% of Partners' Capital | 10.50% |
United State [Member] | Money Market Funds [Member] | Morgan Stanley Institutional Liquidity Fund - Government Portfolio [Member] |  |
Principal Amount | $ 1,000,000 |
Market Value | $ 1,000,000 |
% of Partners' Capital | 10.50% |
Cash Equivalents [Member] | US Treasury Securities [Member] |  |
Market Value | $ 5,487,304 |
% of Partners' Capital | 57.62% |
Cash Equivalents [Member] | US Treasury Securities [Member] | U.S. Treasury Bills: 0.62%, 7/06/2017 |  |
Principal Amount | $ 200,000 |
Market Value | $ 199,983 |
% of Partners' Capital | 2.10% |
Cash Equivalents [Member] | US Treasury Securities [Member] | U.S. Treasury Bills: 0.59%, 7/13/2017 |  |
Principal Amount | $ 300,000 |
Market Value | $ 299,941 |
% of Partners' Capital | 3.15% |
Cash Equivalents [Member] | US Treasury Securities [Member] | U.S. Treasury Bills: 0.61%, 7/20/2017 |  |
Principal Amount | $ 300,000 |
Market Value | $ 299,904 |
% of Partners' Capital | 3.15% |
Cash Equivalents [Member] | US Treasury Securities [Member] | U.S. Treasury Bills: 0.60%, 7/27/2017 |  |
Principal Amount | $ 300,000 |
Market Value | $ 299,871 |
% of Partners' Capital | 3.15% |
Cash Equivalents [Member] | US Treasury Securities [Member] | U.S. Treasury Bills: 0.63%, 8/03/2017 |  |
Principal Amount | $ 200,000 |
Market Value | $ 199,885 |
% of Partners' Capital | 2.10% |
Cash Equivalents [Member] | US Treasury Securities [Member] | U.S. Treasury Bills: 0.61%, 8/10/2017 |  |
Principal Amount | $ 300,000 |
Market Value | $ 299,797 |
% of Partners' Capital | 3.15% |
Cash Equivalents [Member] | US Treasury Securities [Member] | U.S. Treasury Bills: 0.65%, 8/17/2017 |  |
Principal Amount | $ 200,000 |
Market Value | $ 199,830 |
% of Partners' Capital | 2.10% |
Cash Equivalents [Member] | US Treasury Securities [Member] | U.S. Treasury Bills: 0.67%, 8/24/2017 |  |
Principal Amount | $ 200,000 |
Market Value | $ 199,799 |
% of Partners' Capital | 2.10% |
Cash Equivalents [Member] | US Treasury Securities [Member] | U.S. Treasury Bills: 0.76%, 8/31/2017 |  |
Principal Amount | $ 100,000 |
Market Value | $ 99,872 |
% of Partners' Capital | 1.05% |
Cash Equivalents [Member] | US Treasury Securities [Member] | U.S. Treasury Bills: 0.84%, 9/07/2017 |  |
Principal Amount | $ 200,000 |
Market Value | $ 199,683 |
% of Partners' Capital | 2.10% |
Cash Equivalents [Member] | US Treasury Securities [Member] | U.S. Treasury Bills: 0.86%, 9/14/2017 |  |
Principal Amount | $ 200,000 |
Market Value | $ 199,642 |
% of Partners' Capital | 2.10% |
Cash Equivalents [Member] | US Treasury Securities [Member] | U.S. Treasury Bills: 0.87%, 9/21/2017 |  |
Principal Amount | $ 200,000 |
Market Value | $ 199,604 |
% of Partners' Capital | 2.10% |
Cash Equivalents [Member] | US Treasury Securities [Member] | U.S. Treasury Bills: 0.89%, 9/28/2017 |  |
Principal Amount | $ 200,000 |
Market Value | $ 199,560 |
% of Partners' Capital | 2.10% |
Cash Equivalents [Member] | US Treasury Securities [Member] | U.S. Treasury Bills: 0.90%, 10/05/2017 |  |
Principal Amount | $ 200,000 |
Market Value | $ 199,523 |
% of Partners' Capital | 2.09% |
Cash Equivalents [Member] | US Treasury Securities [Member] | U.S. Treasury Bills: 0.92%, 10/12/2017 |  |
Principal Amount | $ 200,000 |
Market Value | $ 199,476 |
% of Partners' Capital | 2.09% |
Cash Equivalents [Member] | US Treasury Securities [Member] | U.S. Treasury Bills: 0.91%, 10/19/2017 |  |
Principal Amount | $ 200,000 |
Market Value | $ 199,447 |
% of Partners' Capital | 2.09% |
Cash Equivalents [Member] | US Treasury Securities [Member] | U.S. Treasury Bills: 0.95%, 10/26/2017 |  |
Principal Amount | $ 200,000 |
Market Value | $ 199,382 |
% of Partners' Capital | 2.09% |
Cash Equivalents [Member] | US Treasury Securities [Member] | U.S. Treasury Bills: 0.97%, 11/02/2017 |  |
Principal Amount | $ 200,000 |
Market Value | $ 199,335 |
% of Partners' Capital | 2.09% |
Cash Equivalents [Member] | US Treasury Securities [Member] | U.S. Treasury Bills: 1.01%, 11/09/2017 |  |
Principal Amount | $ 300,000 |
Market Value | $ 298,903 |
% of Partners' Capital | 3.14% |
Cash Equivalents [Member] | US Treasury Securities [Member] | U.S. Treasury Bills: 0.98%, 11/16/2017 |  |
Principal Amount | $ 200,000 |
Market Value | $ 199,249 |
% of Partners' Capital | 2.09% |
Cash Equivalents [Member] | US Treasury Securities [Member] | U.S. Treasury Bills: 1.05%, 11/24/2017 |  |
Principal Amount | $ 200,000 |
Market Value | $ 199,152 |
% of Partners' Capital | 2.09% |
Cash Equivalents [Member] | US Treasury Securities [Member] | U.S. Treasury Bills: 1.05%, 11/30/2017 |  |
Principal Amount | $ 100,000 |
Market Value | $ 99,559 |
% of Partners' Capital | 1.04% |
Cash Equivalents [Member] | US Treasury Securities [Member] | U.S. Treasury Bills: 1.08%, 12/07/2017 |  |
Principal Amount | $ 200,000 |
Market Value | $ 199,055 |
% of Partners' Capital | 2.09% |
Cash Equivalents [Member] | US Treasury Securities [Member] | U.S. Treasury Bills: 1.09%, 12/14/2017 |  |
Principal Amount | $ 200,000 |
Market Value | $ 199,004 |
% of Partners' Capital | 2.09% |
Cash Equivalents [Member] | US Treasury Securities [Member] | U.S. Treasury Bills: 1.11%, 12/21/2017 |  |
Principal Amount | $ 200,000 |
Market Value | $ 198,943 |
% of Partners' Capital | 2.09% |
Cash Equivalents [Member] | US Treasury Securities [Member] | U.S. Treasury Bills: 1.10%, 12/28/2017 |  |
Principal Amount | $ 200,000 |
Market Value | $ 198,905 |
% of Partners' Capital | 2.09% |
Cash Equivalents [Member] | United State [Member] |  |
Market Value | $ 9,087,304 |
% of Partners' Capital | 95.43% |
[1] | Collateral amounted to $1,192,186 on open futures contracts.

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