Organization - Additional Information (Detail) |
12 Months Ended |
|---|---|
|
Dec. 31, 2025
USD ($)
shares
| |
| Organization, Consolidation and Presentation of Financial Statements [Abstract] | |
| Maximum sponsor fee for legal fees and expenses | $ | $ 500,000 |
| Number of shares in cash-settled transactions in blocks at trust | shares | 10,000 |