Summary of Significant Accounting Policies (Details) (USD $)	2 Months Ended	12 Months Ended		12 Months Ended		12 Months Ended				12 Months Ended					12 Months Ended					12 Months Ended					12 Months Ended
	Feb. 29, 2012 Class	Dec. 31, 2013 Class	Dec. 31, 2012	Dec. 31, 2013 General Partner [Member]	Dec. 31, 2013 ERISA/IRA Investors [Member]	Dec. 31, 2013 Capital Unit, Class A [Member]	Dec. 31, 2012 Capital Unit, Class A [Member]	Dec. 31, 2011 Capital Unit, Class A [Member]	Dec. 31, 2013 Capital Unit, Class A [Member] Maximum [Member]	Dec. 31, 2013 Capital Unit, Class B [Member]	Dec. 31, 2012 Capital Unit, Class B [Member]	Dec. 31, 2011 Capital Unit, Class B [Member]	Dec. 31, 2013 Capital Unit, Class B [Member] Minimum [Member]	Dec. 31, 2013 Capital Unit, Class B [Member] Maximum [Member]	Dec. 31, 2013 Capital Unit Class C [Member]	Dec. 31, 2012 Capital Unit Class C [Member]	Dec. 31, 2011 Capital Unit Class C [Member]	Dec. 31, 2013 Capital Unit Class C [Member] Minimum [Member]	Dec. 31, 2013 Capital Unit Class C [Member] Maximum [Member]	Dec. 31, 2013 Capital Unit Class D [Member]	Dec. 31, 2012 Capital Unit Class D [Member]	Dec. 31, 2011 Capital Unit Class D [Member]	Mar. 01, 2009 Capital Unit Class D [Member]	Dec. 31, 2013 Capital Unit Class D [Member] Minimum [Member]	Dec. 31, 2013 Capital Unit Class Z [Member]	Dec. 31, 2012 Capital Unit Class Z [Member]	Dec. 31, 2011 Capital Unit Class Z [Member]
Schedule of Equity Method Investments [Line Items]
Partnership payments to Ceres for general partner administrative fee, rate by investment, monthly basis (in hundredths)		0.0833%
Partnership payments to Ceres for general partner administrative fee, rate by investment, annual basis (in hundredths)		1.00%
Applicable rate payable by each limited partner to placement agent [Abstract]
Aggregate Investment									$ 4,999,999				$ 250,000	$ 499,999				$ 500,000	$ 4,999,999					$ 5,000,000
Aggregate Investment																									All
Placement agent fee rate, annualized basis (in hundredths)						2.00%				1.50%					1.00%					0.75%					0.00%
Placement agent fee rate, monthly basis (in hundredths)						0.167%				0.125%					0.083%					0.063%					0.00%
Partnership payments to Ceres for administrative fee, rate by investment, monthly basis (in hundredths)		0.0333%
Partnership payments to Ceres for administrative fee, rate by investment, annual basis (in hundredths)		0.40%
Number of share classes	4	2
Initial offer price per capital units (in dollars per unit)		$ 1,000																					$ 1,137
Minimum partnership subscription amount		25,000			10,000
Incremental additional subscriptions		10,000
Limited partners unit that can be redeemed (in hundredths)		100.00%
Minimum investment to be maintained by investor (in units)		3
Period to pay all redemptions		10 days
Units outstanding by share class [Roll Forward]
Units, period start (in units)						23,931.981	34,210.600	39,904.989		4,141.422	6,075.289	7,784.920			7,860.274	9,546.728	16,438.640			23.012	59.829	1,818.843			483.374	957.352	975.359
Subscriptions (in units)						39.366	519.393	4,234.446		0	126.801	1,662.825			0	0	605.343			0	0	0			22.063	0	0
Redemptions (in units)						(7,712.068)	(10,798.012)	(9,928.835)		(942.676)	(2,060.668)	(3,372.456)			(3,693.960)	(1,686.454)	(7,497.255)			(23.012)	(36.817)	(1,759.014)			(100.000)	(473.978)	(18.007)
Units, period end (in units)						16,259.279	23,931.981	34,210.600		3,198.746	4,141.422	6,075.289			4,166.314	7,860.274	9,546.728			0	23.012	59.829			405.437	483.374	957.352
Notice period to terminate partnership				60 days
Provision for income tax		0
Uncertain tax positions requiring recognition		$ 0	$ 0