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Significant Accounting Policies (Narrative) (Details) (USD $)
 12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Significant Accounting Policies [Abstract]      
Minimum block of shares issued redeemed against palladium 50,000    
Annualized rate of Sponsors Fee 0.60%    
Sponsor Fees $ 2,943,626 $ 4,203,724 $ 2,350,928 [1]
Fees payable to the Sponsor $ 254,522 $ 194,805  
[1] Date of Inception