Statements of Assets and Liabilities (Parenthetical) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended	12 Months Ended
Mar. 31, 2021	Dec. 31, 2020
Investment Company [Abstract]
Investment in silver at cost	$ 736,763	$ 608,877
Common stock, shares authorized	Unlimited	Unlimited
Common stock, par value (in dollars per share)	$ 0	$ 0
Common stock, shares issued	38,250,000	33,750,000
Common stock, shares outstanding	38,250,000	33,750,000
Net asset value per share	$ 23.17	$ 25.59

Face amount per share of no-par value common stock.

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Indicates that the number of common shares permitted to be issued by an entity's charter and bylaws is unlimited. The acceptable value is "Unlimited".

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Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury.

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Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation.

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Cost of the investment.

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Net asset value per share or per unit of investments in certain entities that calculate net asset value per share. Includes, but is not limited to, by unit, membership interest, or other ownership interest. Investment includes, but is not limited to, investment in certain hedge funds, venture capital funds, private equity funds, real estate partnerships or funds. Excludes fair value disclosure.

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