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Statements of Changes in Net Assets (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Statement of Stockholders' Equity [Abstract]
Opening balance (in shares)	33,750,000	23,300,000
Opening balance	$ 863,664	$ 407,464
Net investment loss	(681)	(283)
Realized gain (loss) on investment in silver	13,195	(115)
Change in unrealized (loss) on investment in silver	$ (105,220)	(93,071)
Change in unrealized (loss) on unsettled creations or redemptions		$ (83)
Creations (in shares)	6,200,000	1,650,000
Creations	$ 160,444	$ 22,956
Redemptions (in shares)	(1,700,000)	(100,000)
Redemptions	$ (45,079)	$ (1,649)
Closing balance (in shares)	38,250,000	24,850,000
Closing balance	$ 886,323	$ 335,219

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