Consolidated Statements of Changes in Members' Capital (Unaudited) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Members' capital, beginning balance	$ 76,659,546	$ 93,947,400
Subscriptions	1,462,800	589,907
Redemptions	(3,904,278)	(9,495,236)
Net income (loss)	(8,384,583)	5,923,709
Members' capital, ending balance	65,833,485	90,965,780
Class 0 Units [Member]
Members' capital, beginning balance	58,310,022	75,558,523
Members' capital, beginning balance (in units)	456,544.588	657,725.570
Subscriptions	160,000	15,000
Subscriptions (in units)	1,320.227	129.107
Redemptions	(2,991,103)	(8,193,828)
Redemptions (in units)	(25,972.022)	(68,357.949)
Net income (loss)	(6,231,099)	4,813,105
Members' capital, ending balance	49,247,820	72,192,800
Members' capital, ending balance (in units)	431,892.793	589,496.728
Class 2 Units [Member]
Members' capital, beginning balance	18,349,524	18,388,877
Members' capital, beginning balance (in units)	186,461.512	203,657.512
Subscriptions	1,302,800	574,907
Subscriptions (in units)	13,404.463	6,092.289
Redemptions	(913,175)	(1,301,408)
Redemptions (in units)	(10,154.220)	(13,783.385)
Net income (loss)	(2,153,484)	1,110,604
Members' capital, ending balance	$ 16,585,665	$ 18,772,980
Members' capital, ending balance (in units)	189,711.755	195,966.416