Significant Accounting Policies (Narrative) (Details) - USD ($) |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2018 |
Dec. 31, 2017 |
Dec. 31, 2016 |
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| Significant Accounting Policies [Abstract] | |||
| Basket of shares | 50,000 | ||
| Fair value transfers | $ 0 | $ 0 | |
| Reserve for uncertain tax positions | $ 0 | $ 0 | |
| Annualized rate of Sponsors Fee | 0.60% | 0.60% | 0.60% |
| Sponsor Fees | $ 1,073,755 | $ 1,278,403 | $ 1,099,935 |
| Fees payable to Sponsor | 89,688 | 124,409 | |
| All other expenses | $ 0 | $ 0 | |
| X | ||||||||||
- Definition Annualized rate of sponsors fee. No definition available.
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- Definition Fair Value, Transfers Between All Levels, Amount No definition available.
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- Definition Issuance Of Shares, Basket Of Shares No definition available.
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- References No definition available.
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- Definition Amount for accounts payable to related parties. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount recognized for uncertainty in income taxes classified as noncurrent. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition The total amount of other operating cost and expense items that are associated with the entity's normal revenue producing operation. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Fees paid to advisors who provide certain management support and administrative oversight services including the organization and sale of stock, investment funds, limited partnerships and mutual funds. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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