Financial Highlights Per Share Performance - Schedule of Financial Highlights Per Share Performance (Details) - $ / shares	3 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Investment Company, Financial Highlights [Roll Forward]
Net asset value, beginning of period	$ 10.49	$ 25.88
Net decrease in net assets from investment operations:
Net investment loss	(0.06)	(0.19)
Net realized and unrealized loss	(3.99)	(1.63)
Net decrease in net assets resulting from operations	(4.05)	(1.82)
Net asset value, end of period	$ 6.44	$ 24.06
Total return	(38.61%)	(7.03%)
Ratios to average net assets:
Net investment loss	(2.50%)	(2.50%)
Expenses	(2.50%)	(2.50%)