Consolidated Statements of Financial Condition (Parenthetical) (USD $)	Mar. 31, 2013	Dec. 31, 2012
Securities owned, cost (in dollars)	$ 339,021,137	$ 358,405,739
Class A
General Partner, units outstanding	2,499.78	2,499.78
Limited Partners, units outstanding	23,965.05	25,707.33
Class B
Limited Partners, units outstanding	301,187.32	322,257.31
Legacy 1 Class
General Partner, units outstanding	1,025.00	1,025.00
Limited Partners, units outstanding	3,994.37	4,395.66
Legacy 2 Class
General Partner, units outstanding	1,000.00	1,000.00
Limited Partners, units outstanding	11,328.30	12,793.52
Global 1 Class
General Partner, units outstanding	1,372.89	1,372.89
Limited Partners, units outstanding	12,004.82	12,449.60
Global 2 Class
General Partner, units outstanding	1,974.70	1,974.70
Limited Partners, units outstanding	26,448.41	27,930.65
Global 3 Class
Limited Partners, units outstanding	273,985.01	280,522.12