Statements of Assets and Liabilities (Parenthetical) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
Mar. 31, 2018	Dec. 31, 2017
Investment in Bullion at cost	$ 366,048	$ 346,429
Common stock, shares authorized	Unlimited	Unlimited
Common stock, par value	$ 0	$ 0
Common stock, shares issued	5,950,000	5,600,000
Common stock, shares outstanding	5,950,000	5,600,000
Net asset values per Share	$ 64.25	$ 64.63
Gold [Member]
Investment in Bullion at cost	$ 208,362	$ 196,806
Silver [Member]
Investment in Bullion at cost	108,341	103,311
Platinum [Member]
Investment in Bullion at cost	24,371	23,345
Palladium [Member]
Investment in Bullion at cost	$ 24,974	$ 22,967

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

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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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