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Financial Highlights - $ / shares | 12 Months Ended
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Dec. 31, 2015 | Dec. 31, 2014
Per Share Performance (for a Share outstanding throughout the entire period) |  |  |
Net asset value per Share at beginning of year |  | $ 61.60 | $ 65.91
Income from investment operations: |  |  |
Net investment loss |  | (0.35) | (0.41)
Total realized and unrealized gains or losses on investment in Bullion |  | (9.07) | (3.90)
Change in net assets from operations |  | (9.42) | (4.31)
Net asset value per Share at end of year |  | $ 52.18 | $ 61.60
Weighted average number of Shares | [1] | 2,645,205 | 2,669,726
Expense ratio |  | 0.60% | 0.60%
Net investment loss ratio |  | (0.60%) | (0.60%)
Total return, net asset value |  | (15.29%) | (6.54%)
[1] | Effective January 1, 2014, the Trust has adopted the provisions of Topic 946. Refer to Note 2.1 for additional information.

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