Consolidated Statements of Changes in Members' Capital (Unaudited) - USD ($)	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Members' capital, beginning balance	$ 63,499,240	$ 76,385,327
Subscriptions	309,000	347,000
Redemptions	(7,200,473)	(1,432,396)
Net loss	(1,244,298)	(1,923,433)
Members' capital, ending balance	55,363,469	73,376,498
Class 0 Units [Member]
Members' capital, beginning balance	$ 46,912,306	$ 57,571,360
Members' capital, beginning balance (in units)	319,296.990	390,743.099
Subscriptions	$ 309,000	$ 225,000
Subscriptions (in units)	2,144.439	1,523.672
Redemptions	$ (6,737,309)	$ (1,242,648)
Redemptions (in units)	(47,035.243)	(8,316.415)
Net loss	$ (873,331)	$ (1,371,278)
Members' capital, ending balance	$ 39,610,666	$ 55,182,434
Members' capital, ending balance (in units)	274,406.186	383,950.356
Class 2 Units [Member]
Members' capital, beginning balance	$ 16,586,934	$ 18,813,967
Members' capital, beginning balance (in units)	154,401.114	171,170.918
Subscriptions	$ 0	$ 122,000
Subscriptions (in units)	0	1,099.005
Redemptions	$ (463,164)	$ (189,748)
Redemptions (in units)	(4,410.591)	(1,726.656)
Net loss	$ (370,967)	$ (552,155)
Members' capital, ending balance	$ 15,752,803	$ 18,194,064
Members' capital, ending balance (in units)	149,990.523	170,543.267