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Financial Highlights - $ / shares | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Per Share Performance (for a Share outstanding throughout the entire period) |  |  |
Net asset value per Share at beginning of period | $ 76.20 | $ 63.03 | $ 64.63
Income from investment operations: |  |  |
Net investment loss | (0.53) | (0.41) | (0.37)
Total realized and unrealized gains or losses on investment in Bullion | 22.22 | 13.58 | (1.23)
Change in net assets from operations | 21.69 | 13.17 | (1.60)
Net asset value per Share at end of period | $ 97.89 | $ 76.20 | $ 63.03
Weighted average number of Shares | 7,247,814 | 5,811,918 | 5,700,685
Expense ratio | 0.60% | 0.60% | 0.60%
Net investment loss ratio | (0.60%) | (0.60%) | (0.60%)
Total return, net asset value | 28.46% | 20.89% | (0.0248%)

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