v3.25.2
Schedule of Trust Investments Fair Value (Details) - USD ($)
$ in Thousands
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2023
Platform Operator, Crypto Asset [Line Items]      
Total $ 85,235 [1] $ 43,136 [1] $ 34,934
Fair Value, Inputs, Level 1 [Member]      
Platform Operator, Crypto Asset [Line Items]      
Total 85,235 43,136  
Fair Value, Inputs, Level 1 [Member] | Platinum [Member]      
Platform Operator, Crypto Asset [Line Items]      
Total 85,235 43,136  
Fair Value, Inputs, Level 2 [Member]      
Platform Operator, Crypto Asset [Line Items]      
Total  
Fair Value, Inputs, Level 2 [Member] | Platinum [Member]      
Platform Operator, Crypto Asset [Line Items]      
Total  
Fair Value, Inputs, Level 3 [Member]      
Platform Operator, Crypto Asset [Line Items]      
Total  
Fair Value, Inputs, Level 3 [Member] | Platinum [Member]      
Platform Operator, Crypto Asset [Line Items]      
Total  
[1] Cost of investment in platinum: $65,762 and $43,369, respectively.