Operating Segments (Reconciliation Of Reportable Segments Measure Of Profit Or Loss To Income) (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2021
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Operating loss	$ (15,347)	$ (40,195)	$ (53,872)
Lease adjustments	(2,906)	(3,955)	(4,148)
Stock based compensation charge adjustments	(7,309)	(2,962)	(344)
Depreciation and amortization	(23,685)	(7,575)	(4,347)
Impairment loss	(7,039)	0	0
Gain related to fair value adjustment to currency options	0	3,691	0
Gain on disposal on equity securities	0	720	0
Loss on disposal of equity-accounted investment (Note 9)	(205)	(376)	(13)
Change in fair value of equity securities (Note 3)	0	0	49,304
Gain (loss) on disposal/deconsolidation	0	0	(472)
Interest income	1,853	2,089	2,416
Interest expense	(18,567)	(5,829)	(2,982)
Loss before income taxes	(32,266)	(39,900)	(5,619)
Unallocated [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Operating loss	0	0	(10,899)
Group Cost [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Operating loss	(9,109)	(8,587)	(6,965)
Once Off Items [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Operating loss	(1,922)	(8,088)	(6,618)
Reportable Segment [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Operating loss	36,845	(9,028)	(20,551)
Depreciation and amortization	$ (8,536)	$ (3,846)	$ (3,937)