Derivatives and Hedging - Summary of Gross and Net Amounts Recognized Relating to Assets and Liabilities of Partnership's Derivatives and their Offsetting Subject to Master Netting Arrangements or Similar Agreements (Detail) - USD ($)	Sep. 30, 2015	Dec. 31, 2014
Offsetting of Derivative Assets [Line Items]
Gross Amounts Recognized, Assets	$ 1,393,468	$ 2,409,346
Gross Amounts Offset in the Statements of Financial Condition, Assets	(1,050,898)	(1,116,103)
Net Amount Presented in of Financial Condition, Assets	342,570	1,293,243
Gross Amounts Offset in the Statements of Financial Condition, Assets, Financial Instruments	0	0
Gross Amounts Offset in the Statements of Financial Condition, Assets, Cash Collateral Pledged/Received	0	0
Gross Amounts Offset in the Statements of Financial Condition, Assets, Net Amount	342,570	1,293,243
Gross Amounts Recognized, Liabilities	(1,050,898)	(1,116,103)
Gross Amount Offset in the Statements of Financial Condition, Liabilities	1,050,898	1,116,103
Net Amounts Presented in the Statements of Financial Condition, Liabilities	0	0
Gross Amounts Not Offset in the Statements of Financial Condition, Liabilities, Financial Instruments	0	0
Gross Amounts Not Offset in the Statements of Financial Condition, Liabilities, Cash Collateral Pledged/Received	0	0
Liabilities, Net Amount	0	0
Net Fair Value	342,570	1,293,243
Future Contracts [Member]
Offsetting of Derivative Assets [Line Items]
Gross Amounts Recognized, Assets	408,200	873,317
Gross Amounts Offset in the Statements of Financial Condition, Assets	(145,676)	(134,615)
Net Amount Presented in of Financial Condition, Assets	262,524	738,702
Gross Amounts Offset in the Statements of Financial Condition, Assets, Financial Instruments	0	0
Gross Amounts Offset in the Statements of Financial Condition, Assets, Cash Collateral Pledged/Received	0	0
Gross Amounts Offset in the Statements of Financial Condition, Assets, Net Amount	262,524	738,702
Gross Amounts Recognized, Liabilities	(145,676)	(134,615)
Gross Amount Offset in the Statements of Financial Condition, Liabilities	145,676	134,615
Net Amounts Presented in the Statements of Financial Condition, Liabilities	0	0
Gross Amounts Not Offset in the Statements of Financial Condition, Liabilities, Financial Instruments	0	0
Gross Amounts Not Offset in the Statements of Financial Condition, Liabilities, Cash Collateral Pledged/Received	0	0
Liabilities, Net Amount	0	0
Forward Contracts [Member]
Offsetting of Derivative Assets [Line Items]
Gross Amounts Recognized, Assets	985,268	1,536,029
Gross Amounts Offset in the Statements of Financial Condition, Assets	(905,222)	(981,488)
Net Amount Presented in of Financial Condition, Assets	80,046	554,541
Gross Amounts Offset in the Statements of Financial Condition, Assets, Financial Instruments	0	0
Gross Amounts Offset in the Statements of Financial Condition, Assets, Cash Collateral Pledged/Received	0	0
Gross Amounts Offset in the Statements of Financial Condition, Assets, Net Amount	80,046	554,541
Gross Amounts Recognized, Liabilities	(905,222)	(981,488)
Gross Amount Offset in the Statements of Financial Condition, Liabilities	905,222	981,488
Net Amounts Presented in the Statements of Financial Condition, Liabilities	0	0
Gross Amounts Not Offset in the Statements of Financial Condition, Liabilities, Financial Instruments	0	0
Gross Amounts Not Offset in the Statements of Financial Condition, Liabilities, Cash Collateral Pledged/Received	0	0
Liabilities, Net Amount	$ 0	$ 0