Financial Highlights Per Share Performance (Tables)

12 Months Ended

Jun. 30, 2023

Investment Company, Financial Highlights [Abstract]

Summary of Per Share Data

	Years Ended June 30,
	2023			2022			2021
Per Share Data:
Net asset value, beginning of year	$	4.61		$	13.03		$	3.88
Net increase (decrease) in net assets from investment operations:
Net investment loss		(0.16	)		(0.31	)		(0.38	)
Net realized and unrealized gain (loss)		4.77			(8.11	)		9.53
Net increase (decrease) in net assets resulting from operations		4.61			(8.42	)		9.15
Net asset value, end of year	$	9.22		$	4.61		$	13.03
Total return		100.00	%		-64.62	%		235.82	%
Ratios to average net assets:
Net investment loss		-2.50	%		-2.50	%		-2.50	%
Expenses		-2.50	%		-2.50	%		-2.50	%