Consolidated Statements of Financial Condition (Unaudited) (Parenthetical) (USD $)	Sep. 30, 2014	Dec. 31, 2013
Class 0 Units [Member]
Members' capital:
Capital units, issued (in units)	366,704.226	456,544.588
Capital units, outstanding (in units)	366,704.226	456,544.588
Capital units, value (in dollars per unit)	$ 131.61	$ 127.72
Class 2 Units [Member]
Members' capital:
Capital units, issued (in units)	188,372.859	186,461.512
Capital units, outstanding (in units)	188,372.859	186,461.512
Capital units, value (in dollars per unit)	$ 99.89	$ 98.41