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Statement of Assets and Liabilities (Unaudited) (Parenthetical) - USD ($)
$ in Thousands
 9 Months Ended 12 Months Ended
Sep. 30, 2023
Dec. 31, 2022
Schedule of Investments [Abstract]    
Investment in palladium at cost $ 342,731 $ 334,209
Common stock, shares authorized Unlimited Unlimited
Common stock, no par value (in dollars per share) $ 0 $ 0
Common stock, shares issued 1,950,000 1,800,000
Common stock, shares outstanding 1,950,000 1,800,000
Net asset value per share (in dollars per share) $ 118.68 $ 164.16