Fair Value Measurements and Disclosures (Details) (Fair Value Measurement on Recurring Basis [Member], USD $)	Dec. 31, 2014	Dec. 31, 2013
Investment in Augustus I, LLC [Member]
Assets [Abstract]
Investments in Affiliated Trading Companies, at fair value	$ 3,935,697	$ 4,318,716
Investment in TT II, LLC [Member]
Assets [Abstract]
Investments in Affiliated Trading Companies, at fair value	3,356,258	6,221,176
Investment in Rotella I, LLC [Member]
Assets [Abstract]
Investments in Affiliated Trading Companies, at fair value		4,039,384
Investment in WNT I, LLC [Member]
Assets [Abstract]
Investments in Affiliated Trading Companies, at fair value		3,816,627
Investment in Boronia I, LLC [Member]
Assets [Abstract]
Investments in Affiliated Trading Companies, at fair value	2,976,216	2,237,602
Investment in Kaiser I, LLC [Member]
Assets [Abstract]
Investments in Affiliated Trading Companies, at fair value		1,861,138
Unadjusted Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Investment in Augustus I, LLC [Member]
Assets [Abstract]
Investments in Affiliated Trading Companies, at fair value	0	0
Unadjusted Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Investment in TT II, LLC [Member]
Assets [Abstract]
Investments in Affiliated Trading Companies, at fair value	0	0
Unadjusted Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Investment in Rotella I, LLC [Member]
Assets [Abstract]
Investments in Affiliated Trading Companies, at fair value		0
Unadjusted Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Investment in WNT I, LLC [Member]
Assets [Abstract]
Investments in Affiliated Trading Companies, at fair value		0
Unadjusted Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Investment in Boronia I, LLC [Member]
Assets [Abstract]
Investments in Affiliated Trading Companies, at fair value	0	0
Unadjusted Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Investment in Kaiser I, LLC [Member]
Assets [Abstract]
Investments in Affiliated Trading Companies, at fair value		0
Significant Other Observable Inputs (Level 2) [Member] | Investment in Augustus I, LLC [Member]
Assets [Abstract]
Investments in Affiliated Trading Companies, at fair value	3,935,697	4,318,716
Significant Other Observable Inputs (Level 2) [Member] | Investment in TT II, LLC [Member]
Assets [Abstract]
Investments in Affiliated Trading Companies, at fair value	3,356,258	6,221,176
Significant Other Observable Inputs (Level 2) [Member] | Investment in Rotella I, LLC [Member]
Assets [Abstract]
Investments in Affiliated Trading Companies, at fair value		4,039,384
Significant Other Observable Inputs (Level 2) [Member] | Investment in WNT I, LLC [Member]
Assets [Abstract]
Investments in Affiliated Trading Companies, at fair value		3,816,627
Significant Other Observable Inputs (Level 2) [Member] | Investment in Boronia I, LLC [Member]
Assets [Abstract]
Investments in Affiliated Trading Companies, at fair value	2,976,216	2,237,602
Significant Other Observable Inputs (Level 2) [Member] | Investment in Kaiser I, LLC [Member]
Assets [Abstract]
Investments in Affiliated Trading Companies, at fair value		1,861,138
Significant Unobservable Inputs (Level 3) [Member] | Investment in Augustus I, LLC [Member]
Assets [Abstract]
Investments in Affiliated Trading Companies, at fair value	0	0
Significant Unobservable Inputs (Level 3) [Member] | Investment in TT II, LLC [Member]
Assets [Abstract]
Investments in Affiliated Trading Companies, at fair value	0	0
Significant Unobservable Inputs (Level 3) [Member] | Investment in Rotella I, LLC [Member]
Assets [Abstract]
Investments in Affiliated Trading Companies, at fair value		0
Significant Unobservable Inputs (Level 3) [Member] | Investment in WNT I, LLC [Member]
Assets [Abstract]
Investments in Affiliated Trading Companies, at fair value		0
Significant Unobservable Inputs (Level 3) [Member] | Investment in Boronia I, LLC [Member]
Assets [Abstract]
Investments in Affiliated Trading Companies, at fair value	0	0
Significant Unobservable Inputs (Level 3) [Member] | Investment in Kaiser I, LLC [Member]
Assets [Abstract]
Investments in Affiliated Trading Companies, at fair value		$ 0