Consolidated Statements of Changes in Members' Capital (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Members' capital, beginning balance	$ 93,947,400	$ 146,634,313
Subscriptions	2,467,801	15,017,858
Redemptions	(28,314,081)	(58,280,645)
Net income (loss)	8,558,426	(9,424,126)
Members' capital, ending balance	76,659,546	93,947,400
Class 0 Units [Member]
Members' capital, beginning balance	75,558,523	119,087,637
Members' capital, beginning balance (in units)	657,725.570	966,888.461
Subscriptions	705,000	12,319,754
Subscriptions (in units)	5,806.281	100,791.035
Redemptions	(24,940,235)	(48,428,996)
Redemptions (in units)	(206,987.263)	(409,953.926)
Net income (loss)	6,986,734	(7,419,872)
Members' capital, ending balance	58,310,022	75,558,523
Members' capital, ending balance (in units)	456,544.588	657,725.570
Class 2 Units [Member]
Members' capital, beginning balance	18,388,877	27,546,676
Members' capital, beginning balance (in units)	203,657.512	278,890.248
Subscriptions	1,762,801	2,698,104
Subscriptions (in units)	18,904.473	28,261.812
Redemptions	(3,373,846)	(9,851,649)
Redemptions (in units)	(36,100.473)	(103,494.548)
Net income (loss)	1,571,692	(2,004,254)
Members' capital, ending balance	$ 18,349,524	$ 18,388,877
Members' capital, ending balance (in units)	186,461.512	203,657.512