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Significant Accounting Policies (Details Narrative) - USD ($)
 3 Months Ended 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Dec. 31, 2020
Accounting Policies [Abstract]          
Percentage of palladium held by sub-custodians 62.12%   62.12%    
Palladium receivable $ 12,631,929   $ 12,631,929   $ 0
Palladium payable 0   $ 0   0
Minimum block of shares issued redeemed against palladium     25,000    
Reserve for uncertain tax positions $ 0   $ 0   0
Expense ratio [1] 0.60% 0.60% 0.60% 0.60%  
Maximum sponsor fee for legal expenses     $ 100,000    
Sponsor Fees $ 678,513 $ 376,185 1,241,260 $ 923,775  
Fees payable to Sponsor 232,913   232,913   $ 185,515
All other expenses $ 0 $ 0 $ 0 $ 0  
[1] Annualized for periods less than one year.