Consolidated Statements of Changes in Members' Capital (Unaudited) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Members' capital, beginning balance			$ 76,659,546	$ 93,947,400
Subscriptions			4,824,795	1,939,801
Redemptions			(15,067,596)	(20,784,548)
Net income (loss)	8,570,601	(3,222,545)	661,971	1,681,207
Members' capital, ending balance	67,078,716	76,783,860	67,078,716	76,783,860
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			2,199,000	695,000
Subscriptions (in units)			19,098.756	5,721.256
Redemptions			(12,681,116)	(18,448,585)
Redemptions (in units)			(108,939.118)	(153,966.769)
Net income (loss)			433,347	1,649,549
Members' capital, ending balance	48,261,253	59,454,487	48,261,253	59,454,487
Members' capital, ending balance (in units)	366,704.226	509,480.057	366,704.226	509,480.057
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			2,625,795	1,244,801
Subscriptions (in units)			28,469.539	13,212.727
Redemptions			(2,386,480)	(2,335,963)
Redemptions (in units)			(26,558.192)	(25,111.988)
Net income (loss)			228,624	31,658
Members' capital, ending balance	$ 18,817,463	$ 17,329,373	$ 18,817,463	$ 17,329,373
Members' capital, ending balance (in units)	188,372.859	191,758.251	188,372.859	191,758.251