Income Tax (Components Of (Loss) Income Before Income Taxes) (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2022
Income Tax [Line Items]
Loss before income tax expense (benefit)	$ (12,798)	$ (32,266)	$ (39,900)
South Africa [Member]
Income Tax [Line Items]
Loss before income tax expense (benefit)	(4,405)	(21,308)	(31,266)
United States [Member]
Income Tax [Line Items]
Loss before income tax expense (benefit)	(8,705)	(10,755)	(8,509)
Liechtenstein [Member]
Income Tax [Line Items]
Loss before income tax expense (benefit)	0	0	(509)
Other Income Tax Segment [Member]
Income Tax [Line Items]
Loss before income tax expense (benefit)	$ 312	$ (203)	$ 384