Consolidated Statements of Changes in Members' Capital (Unaudited) - USD ($)	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Members' capital, beginning balance	$ 76,385,327	$ 78,546,247
Subscriptions	347,000	734,544
Redemptions	(1,432,396)	(832,281)
Net income (loss)	(1,923,433)	5,476,983
Members' capital, ending balance	73,376,498	83,925,493
Class 0 Units [Member]
Members' capital, beginning balance	$ 57,571,360	$ 58,300,841
Members' capital, beginning balance (in units)	390,743.099	390,307.769
Subscriptions	$ 225,000	$ 377,644
Subscriptions (in units)	1,523.672	2,418.637
Redemptions	$ (1,242,648)	$ (107,801)
Redemptions (in units)	(8,316.415)	(676.320)
Net income (loss)	$ (1,371,278)	$ 4,129,634
Members' capital, ending balance	$ 55,182,434	$ 62,700,318
Members' capital, ending balance (in units)	383,950.356	392,050.086
Class 2 Units [Member]
Members' capital, beginning balance	$ 18,813,967	$ 20,245,406
Members' capital, beginning balance (in units)	171,170.918	178,245.791
Subscriptions	$ 122,000	$ 356,900
Subscriptions (in units)	1,099.005	2,990.196
Redemptions	$ (189,748)	$ (724,480)
Redemptions (in units)	(1,726.656)	(5,999.518)
Net income (loss)	$ (552,155)	$ 1,347,349
Members' capital, ending balance	$ 18,194,064	$ 21,225,175
Members' capital, ending balance (in units)	170,543.267	175,236.469