Trading Companies (Details) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Trading Companies [Abstract]
Trading advisor incentive fee, on trading profits (in hundredths)	20.00%
Partnership's investment in affiliated Trading Companies [Line Items]
Management Fees	$ 432,355	$ 630,513	$ 782,995
Average daily funds held basis (in hundredths)	100.00%
Interest income basis spread deduction from 4-week U.S. Treasury bill discount rate (in hundredths)	0.15%
Trading Company brokerage fees and transaction cost rate basis as a percentage charged to retail commodity customers (in hundredths)	100.00%
Trading company monthly administrative fee (in hundredths)	0.0292%
Trading company annual administrative fee rate (in hundredths)	0.35%
TT II, LLC [Member]
Partnership's investment in affiliated Trading Companies [Line Items]
% of Partners' Capital (in hundredths)	37.00%	28.50%
Fair Value	12,246,448	14,111,867
Pro rata Net Income / (Loss)	(23,003)	(1,664,435)
Management Fees	247,227	273,205
Incentive Fees	4,069	1,319
Administrative Fees	49,445	51,306
WNT I, LLC [Member]
Partnership's investment in affiliated Trading Companies [Line Items]
% of Partners' Capital (in hundredths)	21.40%	18.10%
Fair Value	7,072,401	8,959,457
Pro rata Net Income / (Loss)	(401,771)	302,748
Management Fees	124,221	107,555
Incentive Fees	232	81,715
Administrative Fees	28,985	18,822
Chesapeake I, LLC [Member]
Partnership's investment in affiliated Trading Companies [Line Items]
% of Partners' Capital (in hundredths)	13.30%	9.90%
Fair Value	4,408,930	4,910,449
Pro rata Net Income / (Loss)	(1,151,518)	(753,265)
Management Fees	99,845	94,741
Incentive Fees	0	103,139
Administrative Fees	17,473	16,580
Rotella I, LLC [Member]
Partnership's investment in affiliated Trading Companies [Line Items]
% of Partners' Capital (in hundredths)	10.20%	10.30%
Fair Value	3,383,788	5,082,011
Pro rata Net Income / (Loss)	(218,126)	(253,281)
Management Fees	44,554	120,017
Incentive Fees	0	19,966
Administrative Fees	15,594	25,533
Kaiser I, LLC [Member]
Partnership's investment in affiliated Trading Companies [Line Items]
% of Partners' Capital (in hundredths)	9.60%	21.40%
Fair Value	3,186,918	10,573,213
Pro rata Net Income / (Loss)	(74,042)	(820,064)
Management Fees	73,604	301,052
Incentive Fees	0	0
Administrative Fees	15,863	52,684
Augustus I, LLC [Member]
Partnership's investment in affiliated Trading Companies [Line Items]
% of Partners' Capital (in hundredths)	7.40%	10.30%
Fair Value	2,433,314	5,112,295
Pro rata Net Income / (Loss)	281,992	(516,309)
Management Fees	49,184	86,378
Incentive Fees	0	1,718
Administrative Fees	11,476	20,155
GLC I, LLC [Member]
Partnership's investment in affiliated Trading Companies [Line Items]
% of Partners' Capital (in hundredths)	7.10%	8.00%
Fair Value	2,359,140	3,942,919
Pro rata Net Income / (Loss)	154,061	(381,969)
Management Fees	51,848	71,600
Incentive Fees	0	0
Administrative Fees	12,098	16,707
DKR I, LLC [Member]
Partnership's investment in affiliated Trading Companies [Line Items]
% of Partners' Capital (in hundredths)		0.00%
Fair Value		0
Pro rata Net Income / (Loss)		(496,954)
Management Fees		102,838
Incentive Fees		4,110
Administrative Fees		$ 18,333