Trading Activities - Summary of Gross and Net Amounts Recognized Relating to Assets and Liabilities of Partnership's Derivative Instruments and Transactions Eligible for Offset Subject to Master Netting Agreements or Similar Agreements (Detail) - USD ($)	Jun. 30, 2016	Dec. 31, 2015
Derivative [Line Items]
Gross Amounts Recognized, Assets	$ 1,881,042	$ 1,534,299
Gross Amounts Offset in the Statements of Financial Condition, Assets	(1,160,248)	(1,534,299)
Amount Presented in the statements of Financial Condition, Assets	720,794
Gross Amounts Not Offset in the Statements of Financial Condition, Assets, Financial Instruments	0	0
Gross Amounts Not Offset in the Statements of Financial Condition, Assets, Cash Collateral Received/Pledged	0	0
Assets, Net Amount	720,794
Gross Amounts Recognized, Liabilities	(1,160,248)	(1,783,055)
Gross Amount Offset in the Statements of Financial Condition, Liabilities	1,160,248	1,534,299
Amount Presented in the statements of Financial Condition, Liabilities		(248,756)
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 Received/Pledged	0	0
Liabilities, Net Amount		(248,756)
Net fair value	720,794	(248,756)
Futures Contracts [Member]
Derivative [Line Items]
Gross Amounts Recognized, Assets	833,049	269,891
Gross Amounts Offset in the Statements of Financial Condition, Assets	(215,901)	(269,891)
Amount Presented in the statements of Financial Condition, Assets	617,148
Gross Amounts Not Offset in the Statements of Financial Condition, Assets, Financial Instruments	0	0
Gross Amounts Not Offset in the Statements of Financial Condition, Assets, Cash Collateral Received/Pledged	0	0
Assets, Net Amount	617,148
Gross Amounts Recognized, Liabilities	(215,901)	(460,830)
Gross Amount Offset in the Statements of Financial Condition, Liabilities	215,901	269,891
Amount Presented in the statements of Financial Condition, Liabilities		(190,939)
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 Received/Pledged	0	0
Liabilities, Net Amount		(190,939)
Forward Contracts [Member]
Derivative [Line Items]
Gross Amounts Recognized, Assets	1,047,993	1,264,408
Gross Amounts Offset in the Statements of Financial Condition, Assets	(944,347)	(1,264,408)
Amount Presented in the statements of Financial Condition, Assets	103,646
Gross Amounts Not Offset in the Statements of Financial Condition, Assets, Financial Instruments	0	0
Gross Amounts Not Offset in the Statements of Financial Condition, Assets, Cash Collateral Received/Pledged	0	0
Assets, Net Amount	103,646
Gross Amounts Recognized, Liabilities	(944,347)	(1,322,225)
Gross Amount Offset in the Statements of Financial Condition, Liabilities	944,347	1,264,408
Amount Presented in the statements of Financial Condition, Liabilities		(57,817)
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 Received/Pledged	$ 0	0
Liabilities, Net Amount		$ (57,817)