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Schedule of Investments (USD $)	Dec. 31, 2012	Dec. 31, 2011
Unrealized Gain (Loss) on Open Commodity Contracts	$ 1,556,910	$ 4,002,120
Open Cleared Swap and Futures Contracts | Open Futures Contracts, Long | United States
Number of Contracts	1,068	1,716
Unrealized Gain (Loss) on Open Commodity Contracts	1,556,910	4,002,120
% of Partners' Capital	1.56%	2.36%
Open Cleared Swap and Futures Contracts | Open Futures Contracts, Long | United States | NYMEX Crude Oil Futures CL February 2013 contracts, expiring January 2013
Number of Contracts	89
Unrealized Gain (Loss) on Open Commodity Contracts	31,290
% of Partners' Capital	0.03%
Open Cleared Swap and Futures Contracts | Open Futures Contracts, Long | United States | NYMEX Crude Oil Futures CL March 2013 contracts, expiring February 2013
Number of Contracts	89
Unrealized Gain (Loss) on Open Commodity Contracts	51,770
% of Partners' Capital	0.05%
Open Cleared Swap and Futures Contracts | Open Futures Contracts, Long | United States | NYMEX Crude Oil Futures CL April 2013 contracts, expiring March 2013
Number of Contracts	89
Unrealized Gain (Loss) on Open Commodity Contracts	21,590
% of Partners' Capital	0.02%
Open Cleared Swap and Futures Contracts | Open Futures Contracts, Long | United States | Nymex Crude Oil Futures CL May 2013 Contracts Expiring April 2013
Number of Contracts	89
Unrealized Gain (Loss) on Open Commodity Contracts	91,950
% of Partners' Capital	0.09%
Open Cleared Swap and Futures Contracts | Open Futures Contracts, Long | United States | Nymex Crude Oil Futures CL June 2013 Contracts Expiring May 2013
Number of Contracts	89
Unrealized Gain (Loss) on Open Commodity Contracts	182,510
% of Partners' Capital	0.19%
Open Cleared Swap and Futures Contracts | Open Futures Contracts, Long | United States | Nymex Crude Oil Futures CL July 2013 Contracts Expiring June 2013
Number of Contracts	89
Unrealized Gain (Loss) on Open Commodity Contracts	377,930
% of Partners' Capital	0.38%
Open Cleared Swap and Futures Contracts | Open Futures Contracts, Long | United States | Nymex Crude Oil Futures CL August 2013 Contracts Expiring July 2013
Number of Contracts	89
Unrealized Gain (Loss) on Open Commodity Contracts	334,910
% of Partners' Capital	0.34%
Open Cleared Swap and Futures Contracts | Open Futures Contracts, Long | United States | Nymex Crude Oil Futures CL September 2013 Contracts Expiring August 2013
Number of Contracts	89
Unrealized Gain (Loss) on Open Commodity Contracts	(88,080)
% of Partners' Capital	(0.09%)
Open Cleared Swap and Futures Contracts | Open Futures Contracts, Long | United States | Nymex Crude Oil Futures CL October 2013 Contracts Expiring September 2013
Number of Contracts	89
Unrealized Gain (Loss) on Open Commodity Contracts	(171,350)
% of Partners' Capital	(0.17%)
Open Cleared Swap and Futures Contracts | Open Futures Contracts, Long | United States | Nymex Crude Oil Futures CL November 2013 Contracts Expiring October 2013
Number of Contracts	89
Unrealized Gain (Loss) on Open Commodity Contracts	181,690
% of Partners' Capital	0.18%
Open Cleared Swap and Futures Contracts | Open Futures Contracts, Long | United States | Nymex Crude Oil Futures CL December 2013 Contracts Expiring November 2013
Number of Contracts	89
Unrealized Gain (Loss) on Open Commodity Contracts	380,660
% of Partners' Capital	0.38%
Open Cleared Swap and Futures Contracts | Open Futures Contracts, Long | United States | Nymex Crude Oil Futures CL January 2014 Contracts Expiring December 2013
Number of Contracts	89
Unrealized Gain (Loss) on Open Commodity Contracts	162,040
% of Partners' Capital	0.16%
Open Cleared Swap and Futures Contracts | Open Futures Contracts, Long | United States | NYMEX Crude Oil Futures CL February 2012 contracts, expiring January 2012
Number of Contracts		143
Unrealized Gain (Loss) on Open Commodity Contracts		260,330
% of Partners' Capital		0.15%
Open Cleared Swap and Futures Contracts | Open Futures Contracts, Long | United States | NYMEX Crude Oil Futures CL March 2012 contracts, expiring February 2012
Number of Contracts		143
Unrealized Gain (Loss) on Open Commodity Contracts		16,290
% of Partners' Capital		0.01%
Open Cleared Swap and Futures Contracts | Open Futures Contracts, Long | United States | NYMEX Crude Oil Futures CL April 2012 contracts, expiring March 2012
Number of Contracts		143
Unrealized Gain (Loss) on Open Commodity Contracts		(640,870)
% of Partners' Capital		(0.38%)
Open Cleared Swap and Futures Contracts | Open Futures Contracts, Long | United States | NYMEX Crude Oil Futures CL May 2012 contracts, expiring April 2012
Number of Contracts		143
Unrealized Gain (Loss) on Open Commodity Contracts		(1,031,540)
% of Partners' Capital		(0.61%)
Open Cleared Swap and Futures Contracts | Open Futures Contracts, Long | United States | NYMEX Crude Oil Futures CL June 2012 contracts, expiring May 2012
Number of Contracts		143
Unrealized Gain (Loss) on Open Commodity Contracts		355,110
% of Partners' Capital		0.21%
Open Cleared Swap and Futures Contracts | Open Futures Contracts, Long | United States | NYMEX Crude Oil Futures CL July 2012 contracts, expiring June 2012
Number of Contracts		143
Unrealized Gain (Loss) on Open Commodity Contracts		(273,840)
% of Partners' Capital		(0.16%)
Open Cleared Swap and Futures Contracts | Open Futures Contracts, Long | United States | NYMEX Crude Oil Futures CL August 2012 contracts, expiring July 2012
Number of Contracts		143
Unrealized Gain (Loss) on Open Commodity Contracts		(75,810)
% of Partners' Capital		(0.04%)
Open Cleared Swap and Futures Contracts | Open Futures Contracts, Long | United States | NYMEX Crude Oil Futures CL September 2012 contracts, expiring August 2012
Number of Contracts		143
Unrealized Gain (Loss) on Open Commodity Contracts		1,680,120
% of Partners' Capital		0.99%
Open Cleared Swap and Futures Contracts | Open Futures Contracts, Long | United States | NYMEX Crude Oil Futures CL October 2012 contracts, expiring September 2012
Number of Contracts		143
Unrealized Gain (Loss) on Open Commodity Contracts		1,338,520
% of Partners' Capital		0.79%
Open Cleared Swap and Futures Contracts | Open Futures Contracts, Long | United States | NYMEX Crude Oil Futures CL November 2012 contracts, expiring October 2012
Number of Contracts		143
Unrealized Gain (Loss) on Open Commodity Contracts		1,913,700
% of Partners' Capital		1.13%
Open Cleared Swap and Futures Contracts | Open Futures Contracts, Long | United States | NYMEX Crude Oil Futures CL December 2012 contracts, expiring November 2012
Number of Contracts		143
Unrealized Gain (Loss) on Open Commodity Contracts		692,460
% of Partners' Capital		0.41%
Open Cleared Swap and Futures Contracts | Open Futures Contracts, Long | United States | NYMEX Crude Oil Futures CL January 2013 contracts, expiring December 2012
Number of Contracts		143
Unrealized Gain (Loss) on Open Commodity Contracts		(232,350)
% of Partners' Capital		(0.14%)
Cash Equivalents
Market Value	92,755,785	120,576,360
% of Partners' Capital	93.20%	71.14%
Cash Equivalents | United States | US Treasury Securities | U.S. Treasury Bill
Principal Amount	6,600,000	13,450,000
Market Value	6,599,721	13,448,072
% of Partners' Capital	6.63%	7.93%
Cash Equivalents | United States | Money Market Funds
Market Value	86,156,064	107,128,288
% of Partners' Capital	86.57%	63.21%
Cash Equivalents | United States | Money Market Funds | Fidelity Institutional Government Portfolio, Class I
Principal Amount	4,161,900	40,159,317
Market Value	4,161,900	40,159,317
% of Partners' Capital	4.18%	23.69%
Cash Equivalents | United States | Money Market Funds | Goldman Sachs Financial Square Funds Government Fund, Class FS
Principal Amount	26,455,359
Market Value	26,455,359
% of Partners' Capital	26.58%
Cash Equivalents | United States | Money Market Funds | Morgan Stanley Institutional Liquidity Fund, Government Portfolio
Principal Amount	30,537,560	60,517,522
Market Value	30,537,560	60,517,522
% of Partners' Capital	30.69%	35.71%
Cash Equivalents | United States | Money Market Funds | Wells Fargo Advantage Government Money Market Fund Class I
Principal Amount	25,001,245
Market Value	25,001,245
% of Partners' Capital	25.12%
Cash Equivalents | United States | Money Market Funds | Goldman Sachs Financial Square Funds, Government Fund, Class SL
Principal Amount		6,451,449
Market Value		$ 6,451,449
% of Partners' Capital		3.81%

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