Income Tax (Schedule Of Deferred Tax Assets And Liabilities) (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Jun. 30, 2023
Income Tax [Abstract]
Equity accounted investments and equity investments	$ 38,039	$ 36,267
Net operating loss carryforwards	42,025	39,486
Foreign tax credit carryforwards	32,527	32,599
Provisions and accruals	3,294	3,165
FTS patent	0	40
Other	4,494	4,217
Total deferred tax assets before valuation allowance	120,379	115,774
Valuation allowances	(114,687)	(109,120)
Total deferred tax assets, net of valuation allowance	5,692	6,654
Intangible assets	29,918	32,731
Equity investments	10,354	10,354
Other	102	94
Total deferred tax liabilities	40,374	43,179
Long-term deferred tax assets, net	3,446	10,315
Long-term deferred tax liabilities, net	38,128	46,840
Net deferred tax liabilities	$ 34,682	$ 36,525