Derivatives and Hedging - Summary of Gross and Net Amounts Recognized Relating to Assets and Liabilities of Partnership's Derivatives Instruments and their Offsetting Subject to Master Netting Arrangements or Similar Agreements (Detail) - USD ($)	Sep. 30, 2015	Dec. 31, 2014
Derivative [Line Items]
Gross Amounts Recognized, Assets	$ 6,327,834	$ 9,574,552
Gross Amounts Offset in the Statements of Financial Condition, Assets	(2,681,779)	(3,112,070)
Net Amount Presented in of Financial Condition, Assets	3,646,055	6,462,482
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	3,646,055	6,462,482
Gross Amounts Recognized, Liabilities	(2,972,297)	(3,112,070)
Gross Amount Offset in the Statements of Financial Condition, Liabilities	2,681,779	3,112,070
Net Amounts Presented in the Statements of Financial Condition, Liabilities	(290,518)
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	(290,518)
Net fair value	3,355,537	6,462,482
Future Contract [Member]
Derivative [Line Items]
Gross Amounts Recognized, Assets	5,256,807	7,228,527
Gross Amounts Offset in the Statements of Financial Condition, Assets	(1,610,752)	(1,519,724)
Net Amount Presented in of Financial Condition, Assets	3,646,055	5,708,803
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	3,646,055	5,708,803
Gross Amounts Recognized, Liabilities	(1,610,752)	(1,519,724)
Gross Amount Offset in the Statements of Financial Condition, Liabilities	1,610,752	1,519,724
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
Forward Contracts [Member]
Derivative [Line Items]
Gross Amounts Recognized, Assets	1,071,027	2,346,025
Gross Amounts Offset in the Statements of Financial Condition, Assets	(1,071,027)	(1,592,346)
Net Amount Presented in of Financial Condition, Assets		753,679
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		753,679
Gross Amounts Recognized, Liabilities	(1,361,545)	(1,592,346)
Gross Amount Offset in the Statements of Financial Condition, Liabilities	1,071,027	1,592,346
Net Amounts Presented in the Statements of Financial Condition, Liabilities	(290,518)
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	$ (290,518)