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Investments (Details) - Interest Rate Risk [Member] - USD ($) | Mar. 31, 2016 | Jun. 30, 2015
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Receivable on open futures contracts | [1] | $ 48,032 |  | $ 9,187 |
Payable on open futures contracts | [2] |  |  | (2,579) |
Written options, at fair value |  | $ (190,117) | [2] | $ (27,070) | [3]
[1] | Represents cumulative appreciation of futures contracts as reported in the Statements of Financial Condition.
[2] | Represents cumulative depreciation of futures contracts as reported in the Statements of Financial Condition.
[3] | Represents cumulative depreciation of options contracts as reported in the Statements of Financial Condition.

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- Definition Represents the amount receivable on open future contracts as on the balance sheet date. + References No definition available. + Details
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- Definition Represents the amount payable on open future contracts as on the balance sheet date. + References No definition available. + Details
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- Definition The fair value of the open option contracts written for the investment. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 320 -Section S99 -Paragraph 3 -Subparagraph (SX 210.12-12B.4,Column E) -URI http://asc.fasb.org/extlink&oid=50485924&loc=d3e611197-123010 + Details
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- Details
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