Consolidated Statements of Financial Condition (Parenthetical) (USD $)	Jun. 30, 2013	Dec. 31, 2012
Securities owned, cost (in dollars)	$ 367,103,042	$ 358,405,739
Class A
General Partner, units outstanding	1,660.24	2,499.78
Limited Partners, units outstanding	21,668.00	25,707.33
Class B
Limited Partners, units outstanding	281,591.02	322,257.31
Legacy 1 Class
General Partner, units outstanding	1,025.00	1,025.00
Limited Partners, units outstanding	3,862.72	4,395.66
Legacy 2 Class
General Partner, units outstanding	1,000.00	1,000.00
Limited Partners, units outstanding	10,215.40	12,793.52
Global 1 Class
General Partner, units outstanding	1,372.89	1,372.89
Limited Partners, units outstanding	12,271.59	12,449.60
Global 2 Class
General Partner, units outstanding	1,974.70	1,974.70
Limited Partners, units outstanding	25,230.44	27,930.65
Global 3 Class
Limited Partners, units outstanding	265,877.08	280,522.12