Note 3 - Trust Expenses (Details Textual) - USD ($)	2 Months Ended	12 Months Ended	16 Months Ended	72 Months Ended
	Dec. 31, 2022	Dec. 31, 2022	Oct. 25, 2022	Jun. 30, 2027
Sponsors Fee Annualized Accrual Rate Based on Daily Net Asset Value	0.09%		0.15%
Initial Franchise Fees		$ 765,845
Maximum [Member] | Forecast [Member]
Sponsors Fee After Fee Waiver, Percentage				0.07%