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Significant Accounting Policies (Narrative) (Details) - USD ($)
 3 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Dec. 31, 2016
Significant Accounting Policies [Abstract]      
Percentage of palladium held by the Zurich Sub-Custodian 51.00%    
Basket of shares 50,000    
Minimum block of shares issued redeemed against palladium 50,000    
Fair value transfers $ 0   $ 0
Reserve for uncertain tax positions $ 0   0
Annualized rate of Sponsors Fee [1] 0.60% 0.60%  
Sponsor Fees $ 291,896 $ 252,741  
Fees payable to Sponsor 103,513   $ 89,977
All other expenses $ 0 $ 0  
[1] Annualized for periods of less than one year.