Note 3 - Trust Expenses (Details Textual) - USD ($)		3 Months Ended	12 Months Ended
	Jan. 05, 2024	Mar. 31, 2024	Jan. 11, 2025
Sponsors Fee Annualized Accrual Rate Based on Daily Net Asset Value	0.25%	0.25%
Sponsor Fees Waived		$ 1,074,550
Maximum [Member]
Legal Fees Per Year		$ 500,000
Forecast [Member]
Sponsors Fee After Fee Waiver, Percentage			0.12%
Maximum Amount of Trust Assets for Sponsor's Fee After Fee Waiver			$ 5,000,000,000