Basis of Presentation and Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($)	9 Months Ended
Sep. 30, 2015	Dec. 31, 2014
Accounting Policies [Abstract]
Restricted and unrestricted cash, at carrying value	$ 32,232	$ 182,941
Restricted and unrestricted cash, at cost	$ 31,662	$ 2,583,740
Provision for income tax	The General Partner has concluded that no provision for income tax is required in the Partnership's financial statements.

A brief description of status of the tax examination, significant findings to date, and the entity's position with respect to the findings.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

-Paragraph 15

-Subparagraph (d)(2)

-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32718-109319

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