Statements of Financial Condition (Parenthetical) - USD ($)	Sep. 30, 2016	Dec. 31, 2015
General Partner, Units	32,332.233	38,316.597
Limited Partners, Units	2,790,599.208	3,285,860.484
U.S. Treasury Bills [Member]
Investments in U.S. Treasury bills, amortized cost	$ 14,989,967	$ 55,497,357