v3.8.0.1

Agreements - Additional Information (Detail) | 9 Months Ended
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Sep. 30, 2017 USD ($)
Health Care Trust Fund [Line Items] |
Ceiling for legal fees | $ 100,000
Percentage of annual NAV as limit to pay SEC registration fees incurred | 0.021%
Ceiling for per annum K-1 preparation and mailing fees against annual net assets of Fund | 0.10%
Leverage Fund [Member] |
Health Care Trust Fund [Line Items] |
Management Fee paid to sponsor, percent per annum of the average daily NAV of each Geared Fund | 0.95%
Geared Vix Fund [Member] |
Health Care Trust Fund [Line Items] |
Management Fee paid to sponsor, percent per annum of the average daily NAV of each Geared Fund | 0.95%
Short Euro Fund [Member] |
Health Care Trust Fund [Line Items] |
Management Fee paid to sponsor, percent per annum of the average daily NAV of each Geared Fund | 0.95%
Volatility Index Fund [Member] |
Health Care Trust Fund [Line Items] |
Management Fee paid to sponsor, percent per annum of the average daily NAV of each Geared Fund | 0.85%

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- Definition Ceiling for fee paid to administrative and legal facilitators. + References No definition available. + Details
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- Definition Ceiling for preparation and mailing fee of K-1. + References No definition available. + Details
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- Definition Percentage of annual NAV of fund. + References No definition available. + Details
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- Definition Percentage of average daily NAV of fund. + References No definition available. + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Details
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- Details
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- Details
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- Details
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