v3.26.1
Related Party Transactions - Disbursements to Trustees (Detail) - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Related Party Transaction [Line Items]        
Trustee Fees and Expenses $ 8,125 $ 8,125 $ 16,250 $ 13,750
Individual Trustee Fees [Member]        
Related Party Transaction [Line Items]        
Trustee Fees and Expenses 625 625 1,250 1,875
Corporate Trustee Fees [Member]        
Related Party Transaction [Line Items]        
Trustee Fees and Expenses 625 625 1,250 1,250
Transfer Agent Registrar Fees [Member]        
Related Party Transaction [Line Items]        
Trustee Fees and Expenses [1] $ 6,875 $ 6,875 $ 13,750 $ 10,625
[1] These services are performed by the Corporate Trustee.