Investments (Schedule Of Changes In Equity Investments) (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2020
Equity Method Investments [Roll Forward]
Balance at the beginning of the period	$ 69,240	$ 44,142
Net additions (reductions) to investments	9,823	21,788
Observable price adjustments on non-marketable equity securities	5,367	1,000
Unrealized gains (losses) on marketable equity securities	(18,341)	13,515
Realized gains on marketable and non-marketable equity securities	3,981
Impairment of investments	(3,209)
Reclassifications		0
Loss attributable to equity method investments	(8,486)	(11,205)	$ (25,058)
Carrying value at the end of the period	58,375	69,240	44,142
Non-marketable securities
Equity Method Investments [Roll Forward]
Balance at the beginning of the period	23,002	30,033
Net additions (reductions) to investments	11,775	2,538
Observable price adjustments on non-marketable equity securities	5,367	1,000
Realized gains on marketable and non-marketable equity securities	2,355
Impairment of investments	(3,209)
Reclassifications		(10,569)
Carrying value at the end of the period	39,290	23,002	30,033
Marketable securities
Equity Method Investments [Roll Forward]
Balance at the beginning of the period	29,084	0
Net additions (reductions) to investments	(3,202)	5,000
Unrealized gains (losses) on marketable equity securities	(18,341)	13,515
Realized gains on marketable and non-marketable equity securities	1,626
Reclassifications		10,569
Carrying value at the end of the period	9,167	29,084	0
Equity method investments
Equity Method Investments [Roll Forward]
Balance at the beginning of the period	17,154	14,109
Net additions (reductions) to investments	1,250	14,250
Loss attributable to equity method investments	(8,486)	(11,205)
Carrying value at the end of the period	$ 9,918	$ 17,154	$ 14,109