Consolidated Statements of Changes in Members' Capital Equity (Unaudited) (USD $)	Blended Strategies Portfolio [Member] Class 0 units [Member]	Blended Strategies Portfolio [Member] Class 2 Units [Member]	Total Blended Strategies Portfolio [Member]	Systematic Strategies Portfolio [Member] Class 0 units [Member]	Systematic Strategies Portfolio [Member] Class 2 Units [Member]	Total Systematic Strategies Portfolio [Member]	Total
Members' capital at Dec. 31, 2010	$ 121,701,356	$ 26,198,813	$ 147,900,169	$ 12,648,247	$ 8,638,694	$ 21,286,941	$ 169,187,110
Members' capital (in units) at Dec. 31, 2010	875,825.668	230,452.833		122,899.506	86,626.635
Increase (Decrease) in Partners' Capital [Roll Forward]
Subscriptions	15,120,041	3,232,561	18,352,602	1,721,533	4,243,511	5,965,044	24,317,646
Subscriptions (in units)	107,697.644	28,261.784		16,685.584	42,509.460
Redemptions	(895,563)	(532,092)	(1,427,655)	(266,441)	(257,994)	(524,435)	(1,952,090)
Redemptions (in units)	(6,421.26)	(4,634.697)		(2,563.637)	(2,591.194)
Net (loss) income	(1,621,063)	(464,474)	(2,085,537)	(390,647)	(414,901)	(805,548)	(2,891,085)
Members' capital at Mar. 31, 2011	134,304,771	28,434,808	162,739,579	13,712,692	12,209,310	25,922,002	188,661,581
Members' capital (in units) at Mar. 31, 2011	977,102.052	254,079.920		137,021.453	126,544.901
Members' capital at Dec. 31, 2011	119,087,637	27,546,676	146,634,313	9,117,153	14,229,831	23,346,984	169,981,297
Members' capital (in units) at Dec. 31, 2011	966,888.461	278,890.248		112,079.324	184,238.954
Increase (Decrease) in Partners' Capital [Roll Forward]
Subscriptions	2,773,256	656,354	3,429,610	236,000	100,000	336,000	3,765,610
Subscriptions (in units)	22,409.429	6,590.725		2,895.964	1,294.902
Redemptions	(6,013,292)	(1,984,033)	(7,997,325)	(684,636)	(1,522,141)	(2,206,777)	(10,204,102)
Redemptions (in units)	(48,142.859)	(19,919.494)		(8,274.643)	(19,527.24)
Net (loss) income	2,868,282	510,313	3,378,595	114,907	102,608	217,515	3,596,110
Members' capital at Mar. 31, 2012	$ 118,715,883	$ 26,729,310	$ 145,445,193	$ 8,783,424	$ 12,910,298	$ 21,693,722	$ 167,138,915
Members' capital (in units) at Mar. 31, 2012	941,155.031	265,561.479		106,700.645	166,006.616