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Significant Accounting Policies (Narrative) (Details) (USD $)
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Significant Accounting Policies [Abstract]      
Realized loss on silver $ 144,644,320    
Annualized rate of Sponsors Fee 0.45%    
Annualized rate of Sponsors Fee after waiver 0.30%    
Sponsor Fees 1,308,257 1,707,955 1,955,837
Sponsor fees waived 654,129 853,978 977,919
Fees payable to the Sponsor $ 88,391 $ 140,323