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 ($)	Sep. 30, 2016	Dec. 31, 2015
Derivative [Line Items]
Gross Amounts Recognized, Assets	$ 1,193,209	$ 1,534,299
Gross Amounts Offset in the Statements of Financial Condition, Assets	(895,165)	(1,534,299)
Amount Presented in the statements of Financial Condition, Assets	298,044
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	298,044
Gross Amounts Recognized, Liabilities	(938,055)	(1,783,055)
Gross Amount Offset in the Statements of Financial Condition, Liabilities	895,165	1,534,299
Amount Presented in the statements of Financial Condition, Liabilities	(42,890)	(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	(42,890)	(248,756)
Net fair value	255,154	(248,756)
Futures Contracts [Member]
Derivative [Line Items]
Gross Amounts Recognized, Assets	542,530	269,891
Gross Amounts Offset in the Statements of Financial Condition, Assets	(244,486)	(269,891)
Amount Presented in the statements of Financial Condition, Assets	298,044
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	298,044
Gross Amounts Recognized, Liabilities	(244,486)	(460,830)
Gross Amount Offset in the Statements of Financial Condition, Liabilities	244,486	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	650,679	1,264,408
Gross Amounts Offset in the Statements of Financial Condition, Assets	(650,679)	(1,264,408)
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
Gross Amounts Recognized, Liabilities	(693,569)	(1,322,225)
Gross Amount Offset in the Statements of Financial Condition, Liabilities	650,679	1,264,408
Amount Presented in the statements of Financial Condition, Liabilities	(42,890)	(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	$ (42,890)	$ (57,817)