Statements of Financial Condition (Parenthetical) - USD ($)	Jun. 30, 2016	Dec. 31, 2015
Limited Partners, Units outstanding	1,606,699.850	1,774,475.344
General Partner, Units outstanding	17,148.765	20,184.324
U.S. Treasury Bills [Member]
Investment in U.S. Treasury bills, amortized cost	$ 0	$ 15,499,510