Condensed Schedule of Investments	Sep. 30, 2015 USD ($) Number
United State [Member] | Money Market Funds [Member]
Market Values	$ 9,510,692
% of Partners' Capital	70.25%
United State [Member] | Morgan Stanley Institutional Liquidity Fund - Government Portfolio [Member] | Money Market Funds [Member]
Principal Amount	$ 6,510,691
Market Values	$ 6,510,692
% of Partners' Capital	48.09%
United State [Member] | Wells Fargo Advantage Government Money Market Fund - Class I [Member] | Money Market Funds [Member]
Principal Amount	$ 3,000,000
Market Values	$ 3,000,000
% of Partners' Capital	22.16%
Cash Equivalents [Member] | US Treasury Securities [Member]
Market Values	$ 1,998,558
% of Partners' Capital	14.77%
Cash Equivalents [Member] | US Treasury Securities [Member] | U.S. Treasury Bills: 0.19%, 2/04/2016 [Member]
Principal Amount	$ 1,000,000
Market Values	$ 999,352
% of Partners' Capital	7.39%
Cash Equivalents [Member] | US Treasury Securities [Member] | U.S. Treasury Bills: 0.22%, 2/11/2016 [Member]
Principal Amount	$ 1,000,000
Market Values	$ 999,206
% of Partners' Capital	7.38%
Cash Equivalents [Member] | United State [Member]
Market Values	$ 11,509,250
% of Partners' Capital	85.02%
Open Futures Contracts, Long [Member] | United State [Member]
Number of Contracts | Number	493	[1]
Unrealized Gain (Loss) on Open Commodity Contracts	$ (2,340,556)	[1]
% of Partners' Capital	(17.29%)	[1]
Open Futures Contracts, Long [Member] | United State [Member] | NYMEX Natural Gas Futures NG November 2015 contracts, expiring October 2015 [Member]
Number of Contracts | Number	41
Unrealized Gain (Loss) on Open Commodity Contracts	$ (301,310)
% of Partners' Capital	(2.23%)
Open Futures Contracts, Long [Member] | United State [Member] | NYMEX Natural Gas Futures NG December 2015 contracts, expiring November 2015 [Member]
Number of Contracts | Number	41
Unrealized Gain (Loss) on Open Commodity Contracts	$ (273,330)
% of Partners' Capital	(2.02%)
Open Futures Contracts, Long [Member] | United State [Member] | NYMEX Natural Gas Futures NG January 2016 contracts, expiring December 2015 [Member]
Number of Contracts | Number	41
Unrealized Gain (Loss) on Open Commodity Contracts	$ (437,565)
% of Partners' Capital	(3.23%)
Open Futures Contracts, Long [Member] | United State [Member] | NYMEX Natural Gas Futures NG February 2016 contracts, expiring January 2016 [Member]
Number of Contracts | Number	41
Unrealized Gain (Loss) on Open Commodity Contracts	$ (213,530)
% of Partners' Capital	(1.58%)
Open Futures Contracts, Long [Member] | United State [Member] | NYMEX Natural Gas Futures NG March 2016 contracts, expiring February 2016 [Member]
Number of Contracts | Number	41
Unrealized Gain (Loss) on Open Commodity Contracts	$ (206,880)
% of Partners' Capital	(1.53%)
Open Futures Contracts, Long [Member] | United State [Member] | NYMEX Natural Gas Futures NG April 2016 contracts, expiring March 2016 [Member]
Number of Contracts | Number	41
Unrealized Gain (Loss) on Open Commodity Contracts	$ (154,762)
% of Partners' Capital	(1.14%)
Open Futures Contracts, Long [Member] | United State [Member] | NYMEX Natural Gas Futures NG May 2016 contracts, expiring April 2016 [Member]
Number of Contracts | Number	42
Unrealized Gain (Loss) on Open Commodity Contracts	$ (98,169)
% of Partners' Capital	(0.72%)
Open Futures Contracts, Long [Member] | United State [Member] | NYMEX Natural Gas Futures NG June 2016 contracts, expiring May 2016 [Member]
Number of Contracts | Number	41
Unrealized Gain (Loss) on Open Commodity Contracts	$ (178,370)
% of Partners' Capital	(1.32%)
Open Futures Contracts, Long [Member] | United State [Member] | NYMEX Natural Gas Futures NG July 2016 contracts, expiring June 2016 [Member]
Number of Contracts | Number	41
Unrealized Gain (Loss) on Open Commodity Contracts	$ (141,938)
% of Partners' Capital	(1.05%)
Open Futures Contracts, Long [Member] | United State [Member] | NYMEX Natural Gas Futures NG August 2016 contracts, expiring July 2016 [Member]
Number of Contracts | Number	41
Unrealized Gain (Loss) on Open Commodity Contracts	$ (155,470)
% of Partners' Capital	(1.15%)
Open Futures Contracts, Long [Member] | United State [Member] | NYMEX Natural Gas Futures NG September 2016 contracts, expiring August 2016 [Member]
Number of Contracts | Number	41
Unrealized Gain (Loss) on Open Commodity Contracts	$ (106,330)
% of Partners' Capital	(0.78%)
Open Futures Contracts, Long [Member] | United State [Member] | NYMEX Natural Gas Futures NG October 2016 contracts, expiring September 2016 [Member]
Number of Contracts | Number	41
Unrealized Gain (Loss) on Open Commodity Contracts	$ (72,902)
% of Partners' Capital	(0.54%)

[1] Collateral amounted to $2,957,554 on open future contracts.