Consolidated Statements of Changes in Members' Capital Equity (continued) (USD $)	Total	Blended Strategies Portfolio [Member]	Blended Strategies Portfolio [Member] Class 0 Units [Member]	Blended Strategies Portfolio [Member] Class 2 Units [Member]	Systematic Strategies Portfolio [Member]	Systematic Strategies Portfolio [Member] Class 0 Units [Member]	Systematic Strategies Portfolio [Member] Class 2 Units [Member]
Members' capital beginning balance at Dec. 31, 2009	$ 111,715,888	$ 104,469,283	$ 86,253,313	$ 18,215,970	$ 7,246,605	$ 4,210,889	$ 3,035,716
Members' capital beginning balance (in units) at Dec. 31, 2009			636,284.928	161,590.940		41,862.245	30,647.378
Subscriptions	43,634,710	32,050,876	28,198,847	3,852,029	11,583,834	7,747,459	3,836,375
Subscriptions (in units)			209,591.883	34,719.384		82,338.958	40,833.612
Redemptions	(6,287,369)	(5,750,098)	(3,996,683)	(1,753,415)	(537,271)	(303,574)	(233,697)
Redemptions (in units)			(29,568.829)	(15,785.104)		(3,128.865)	(2,481.015)
Net income (loss)	1,748,622	1,568,547	1,537,855	30,692	180,075	241,728	(61,653)
Members' capital ending balance at Sep. 30, 2010	150,811,851	132,338,608	111,993,332	20,345,276	18,473,243	11,896,502	6,576,741
Members' capital ending balance (in units) at Sep. 30, 2010			816,307.982	180,525.220		121,072.338	68,999.975
Members' capital beginning balance at Dec. 31, 2010	169,187,110	147,900,169	121,701,356	26,198,813	21,286,941	12,648,247	8,638,694
Members' capital beginning balance (in units) at Dec. 31, 2010			875,825.668	230,452.833		122,899.506	86,626.635
Subscriptions	56,923,993	42,293,399	33,408,396	8,885,003	14,630,594	4,369,009	10,261,585
Subscriptions (in units)			242,552.526	79,224.471		43,311.027	106,334.600
Redemptions	(17,117,926)	(10,587,791)	(7,879,927)	(2,707,864)	(6,530,135)	(5,281,272)	(1,248,863)
Redemptions (in units)			(58,046.780)	(24,457.680)		(58,207.379)	(13,202.894)
Net income (loss)	(14,239,210)	(9,837,887)	(7,711,265)	(2,126,622)	(4,401,323)	(2,082,580)	(2,318,743)
Members' capital ending balance at Sep. 30, 2011	$ 194,753,967	$ 169,767,890	$ 139,518,560	$ 30,249,330	$ 24,986,077	$ 9,653,404	$ 15,332,673
Members' capital ending balance (in units) at Sep. 30, 2011			1,060,331.414	285,219.624		108,003.154	179,758.341

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