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Significant Accounting Policies (Narrative) (Details) - USD ($)
 3 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Dec. 31, 2019
Significant Accounting Policies [Abstract]      
Percentage of palladium held by the Zurich Sub-Custodian 96.50%    
Basket of shares 25,000 50,000  
Fair value transfers $ 0   $ 0
Palladium receivable 0   0
Palladium payable 0   0
Reserve for uncertain tax positions $ 0   0
Annualized rate of Sponsors Fee [1] 0.60% 0.60%  
Maximum sponsor fee for administrative and marketing expenses $ 100,000    
Sponsor Fees 547,590 $ 329,045  
Fees payable to Sponsor 169,297   $ 152,293
All other expenses $ 0 $ 0  
[1] Annualized for periods of less than one year.