Value of the investment at close of period. For schedules of investments that are categorized, the value would be aggregated by category. For investment in and advances to affiliates, if operations of any controlled companies are different in character from those of the company, group such affiliates within divisions and by type of activities.

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 14

-Paragraph 2, 3

-Article 12

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 12C

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Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 946

-SubTopic 320

-Section S99

-Paragraph 4

-Subparagraph (SX 210.12-12C.Column C.7)

-URI http://asc.fasb.org/extlink&oid=6955306&loc=d3e611225-123010

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 14

-Paragraph Column E

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Reference 5: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

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-URI http://asc.fasb.org/extlink&oid=6955306&loc=d3e611322-123010

Reference 6: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

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Reference 7: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

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-URI http://asc.fasb.org/extlink&oid=6955306&loc=d3e611133-123010

Reference 8: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

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Reference 9: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

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Reference 10: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

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Reference 11: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 946

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-Section S99

-Paragraph 5

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-URI http://asc.fasb.org/extlink&oid=6955306&loc=d3e611282-123010

Reference 12: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 12

-Paragraph 3, 4

-Article 12

+ Details

Accounting Policies - Derivative Instruments Priced at Fair Value Using Unobservable Inputs (Detail) (USD $)	Dec. 31, 2012	Dec. 31, 2011
Assets
Investment in funds, at fair value	$ 18,321,947	$ 22,884,691
Investment in Funds [Member]
Assets
Investment in funds, at fair value	18,321,947	22,884,691
Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1) [Member]
Assets
Investment in funds, at fair value
Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1) [Member] \| Investment in Funds [Member]
Assets
Investment in funds, at fair value
Significant Other Observable Inputs (Level 2) [Member]
Assets
Investment in funds, at fair value	18,321,947	22,884,691
Significant Other Observable Inputs (Level 2) [Member] \| Investment in Funds [Member]
Assets
Investment in funds, at fair value	18,321,947	22,884,691
Significant Unobservable Inputs (Level 3) [Member]
Assets
Investment in funds, at fair value
Significant Unobservable Inputs (Level 3) [Member] \| Investment in Funds [Member]
Assets
Investment in funds, at fair value