Consolidated Statements of Changes in Members' Capital - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Members' capital, beginning balance	$ 78,546,247	$ 76,659,546
Subscriptions	7,354,389	11,652,795
Redemptions	(8,069,824)	(20,262,759)
Net income (loss)	(1,445,485)	10,496,665
Members' capital, ending balance	76,385,327	78,546,247
Class 0 Units [Member]
Members' capital, beginning balance	$ 58,300,841	$ 58,310,022
Members' capital, beginning balance (in units)	390,307.769	456,544.588
Subscriptions	$ 5,069,138	$ 8,734,000
Subscriptions (in units)	33,836.753	68,503.746
Redemptions	$ (5,054,568)	$ (16,433,428)
Redemptions (in units)	(33,401.423)	(134,740.565)
Net income (loss)	$ (744,051)	$ 7,690,247
Members' capital, ending balance	$ 57,571,360	$ 58,300,841
Members' capital, ending balance (in units)	390,743.099	390,307.769
Class 2 Units [Member]
Members' capital, beginning balance	$ 20,245,406	$ 18,349,524
Members' capital, beginning balance (in units)	178,245.791	186,461.512
Subscriptions	$ 2,285,251	$ 2,918,795
Subscriptions (in units)	19,815.908	31,364.710
Redemptions	$ (3,015,256)	$ (3,829,331)
Redemptions (in units)	(26,890.781)	(39,580.431)
Net income (loss)	$ (701,434)	$ 2,806,418
Members' capital, ending balance	$ 18,813,967	$ 20,245,406
Members' capital, ending balance (in units)	171,170.918	178,245.791