XML 14 R3.htm IDEA: XBRL DOCUMENT v3.24.1.u1
Statements of Assets and Liabilities (Parenthetical) - USD ($)
$ / shares in Thousands, $ in Thousands
9 Months Ended 12 Months Ended
Mar. 31, 2024
Jun. 30, 2023
Schedule of Investments [Abstract]    
Cost of investment in platinum bullion $ 40,965 $ 40,355
Common stock, no par value $ 0 $ 0
Common stock, shares authorized Unlimited Unlimited