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Statements of Assets and Liabilities (Parenthetical) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022
Statement of Financial Position [Abstract] |  |
Investment in silver at cost | $ 966,910 | $ 998,547
Common stock, shares authorized | Unlimited | Unlimited
Common stock, par value (in dollars per share) | $ 0 | $ 0
Common stock, shares issued | 46,550,000 | 48,650,000
Common stock, shares outstanding | 46,550,000 | 48,650,000
Net asset value per share (in dollars per share) | $ 22.78 | $ 23.00

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