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Note 8 - Financial Highlights | 9 Months Ended
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Sep. 30, 2014
Financial Highlights [Abstract] |
Financial Highlights [Text Block] | 8 - Financial Highlights Effective January 1, 2014, the Trust qualifies as an investment company for accounting purposes. Disclosure of financial highlights is required for investment companies. Please refer to Note 2B. The following financial highlights relate to investment performance and operations for a Share outstanding for the three and nine months ended September 30, 2014.
|  | Three Months Ended September 30, 2014 |  |  | Nine Months Ended September 30, 2014 |
Net asset value per Share, beginning of period |  | $ | 20.04 |  |  | $ | 18.77 |
Net investment loss(a) |  |  | (0.02 | ) |  |  | (0.07 | )
Net realized and unrealized loss(b) |  |  | (3.61 | ) |  |  | (2.29 | )
Net decrease in net assets from operations |  |  | (3.63 | ) |  |  | (2.36 | )
Net asset value per Share, end of period |  | $ | 16.41 |  |  | $ | 16.41 |
Total return, at net asset value(c) |  |  | (18.11 | )% |  |  | (12.57 | )%
Ratio to average net assets: |  |  |  |  |  |  |  |
Net investment loss(d) |  |  | (0.50 | )% |  |  | (0.50 | )%
Expenses(d) |  |  | 0.50 | % |  |  | 0.50 | %
(a) Based on average Shares outstanding during the period. (b) The amounts reported for a Share outstanding may not accord with the change in aggregate gains and losses on investment for the period due to the timing of Trust Share transactions in relation to the fluctuating fair values of the Trust’s underlying investment. (c) Based on the change in net asset value of a Share during the period. Percentage is not annualized. (d) Percentage is annualized.

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- Definition Presentation of financial highlights related to investment performance and operations. + References No definition available. + Details
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