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Schedules of Investments (Details) - Investments $ in Thousands	Dec. 31, 2015 USD ($) oz	Dec. 31, 2014 USD ($) oz	Dec. 31, 2013 USD ($) oz	Dec. 31, 2012 USD ($) oz
Investments [Abstract]
Silver bullion (in Ounces) | oz	317,934,900	329,564,200	320,177,800	324,239,100
Silver bullion	$ 5,979,252	$ 6,386,750	$ 6,243,467	$ 8,135,003
Silver bullion	4,393,861	5,263,140
Less Liabilities	(1,917)	(2,338)
Net Assets	$ 4,391,944	$ 5,260,802

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Ounces of silver bullion held by the trust.

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Fair value of asset after deduction of liability.

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Value of the investment at close of period. For schedules of investments that are categorized, the value would be aggregated by category. For investment in and advances to affiliates, if operations of any controlled companies are different in character from those of the company, group such affiliates within divisions and by type of activities.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 946
-SubTopic 320
-Section S99
-Paragraph 1
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-URI http://asc.fasb.org/extlink&oid=50485924&loc=d3e611133-123010

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-URI http://asc.fasb.org/extlink&oid=50485924&loc=d3e611225-123010

Reference 3: http://www.xbrl.org/2003/role/presentationRef
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-Section S99
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-URI http://asc.fasb.org/extlink&oid=50485924&loc=d3e611322-123010

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Fair value of financial and nonfinancial obligations.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
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-Section 50
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