Statements of Financial Condition (Parenthetical) - USD ($)	Jun. 30, 2015	Dec. 31, 2014
Limited Partners, Units	1,915,371.739	2,022,565.842
General Partner, Units	22,240.245	22,240.245
U.S. Treasury Bills [Member]
Investment, amortized cost	$ 14,969,765	$ 0