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Changes in ounces of silver and their respective values for the years ended December 31, 2020 and 2019 are set out below: (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2020 USD ($) oz	Dec. 31, 2019 USD ($) oz	Dec. 31, 2018 USD ($) oz
Accounting Policies [Abstract]
Opening balance | oz	23,216,266.6	21,973,640.6
Creations | oz	11,129,847.0	2,183,968.2
Redemptions | oz	(1,645,663.9)	(874,529.4)
Transfers of silver to pay expenses | oz	(82,587.7)	(66,812.8)
Closing balance | oz	32,617,862.0	23,216,266.6	21,973,640.6
Opening balance	$ 418,938	$ 339,822
Creations	218,306	36,430
Redemptions	(34,601)	(13,838)
Realized gain on silver distributed for the redemption of Shares	4,746	(2,249)	$ (4,374)
Transfers of silver to pay expenses	(1,674)	(1,068)
Realized gain on silver transferred to pay expenses	174	(150)	(179)
Change in unrealized gain on investment in silver	258,079	59,907	(22,626)
Change in unrealized gain on unsettled creations or redemptions	(84)	84
Closing balance	$ 863,884	$ 418,938	$ 339,822

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Change in unrealized gain on unsettled creations or redemptions

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Cost of Bullion transferred to pay Trust's expenses.

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- Definition

Ounces of bullion received into the Trust's account in respect of creations.

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Amount of creations of bullion in investment.

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Realized gain or loss during the period on bullion distributed for the redemption of Shares. Realized gains or losses are calculated on a trade date basis using average cost.

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Ounces of bullion paid out of the Trust's account in respect of redemptions.

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Ounces of bullion transferred to pay Trust's expenses.

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Value of bullion distributed at average cost for the redemption of Shares excluding bullion payable.

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Gain (loss) related to the sale of trust assets (includes, but is not limited to, gold and silver) to pay trust expenses.

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Investments held in physical commodities, such as gold, silver, platinum, crude oil, coal, sugar, rice, wheat.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
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Quantity of the investment. Indicate the measure in the unit of measure. This is commonly used for investments other than securities. For example, if the investment is gold, the balance would be the number of ounces and the unit of measure would indicate "ounces".

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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-Section S99
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