Statements of Financial Condition (Parenthetical) - USD ($)	Sep. 30, 2015	Dec. 31, 2014
Limited Partners, Units	1,854,224.892	2,022,565.842
General Partner, Units	20,184.324	22,240.245
U.S. Treasury Bills [Member]
Investment in U.S. Treasury bills, Amortized cost	$ 14,969,765	$ 0