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Schedule of Investment in Platinum (Details)
$ in Thousands
 6 Months Ended 12 Months Ended
Dec. 31, 2023
USD ($)
oz
Jun. 30, 2023
USD ($)
oz
Schedule of Investments [Abstract]    
Platinum opening balance (in Ounces) | oz 38,945.929 49,416.657
Platinum opening balance | $ $ 34,934 [1] $ 44,821
Platinum contributed (in Ounces) | oz 4,862.823 3,412.559
Platinum contributed | $ $ 4,373 $ 3,392
Platinum distributed (in Ounces) | oz (4,476.722) (13,883.287)
Platinum distributed | $ $ (4,579) $ (14,418)
Change in unrealized depreciation (in Ounces) | oz
Change in unrealized depreciation | $ $ 4,840 $ 1,139
Platinum ending balance (in Ounces) | oz 39,332.030 38,945.929
Platinum ending balance | $ [1] $ 39,568 $ 34,934
[1] Cost of investment in platinum: $40,149 and $40,355, respectively.