Investments (Schedule Of Changes In Equity Investments) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2021	Dec. 31, 2020
Debt and Equity Securities, FV-NI [Line Items]
Balance at the beginning of the period			$ 69,240	$ 44,142
Investments			1,452	14,446
Observable price adjustments on non-marketable equity securities			5,367
Unrealized gains (losses) on marketable equity securities			(7,942)	4,776
Realized gains on marketable and non-marketable equity securities			3,992
Reclassifications
Impairment of investments			(209)
Loss attributable to equity method investments	$ (1,914)	$ (2,640)	(3,300)	(4,928)
Carrying value at the end of the period	68,600	58,436	68,600	58,436
Non-marketable Securities [Member]
Debt and Equity Securities, FV-NI [Line Items]
Balance at the beginning of the period			23,002	30,033
Investments			4,665	1,946
Observable price adjustments on non-marketable equity securities			5,367
Unrealized gains (losses) on marketable equity securities
Realized gains on marketable and non-marketable equity securities			2,355
Reclassifications				(10,569)
Impairment of investments			(209)
Loss attributable to equity method investments
Carrying value at the end of the period	35,180	21,410	35,180	21,410
Marketable Securities [Member]
Debt and Equity Securities, FV-NI [Line Items]
Balance at the beginning of the period			29,084
Investments			(3,213)
Observable price adjustments on non-marketable equity securities
Unrealized gains (losses) on marketable equity securities			(7,942)	4,776
Realized gains on marketable and non-marketable equity securities			1,637
Reclassifications				10,569
Impairment of investments
Loss attributable to equity method investments
Carrying value at the end of the period	19,566	15,345	19,566	15,345
Equity Method Investments [Member]
Debt and Equity Securities, FV-NI [Line Items]
Balance at the beginning of the period			17,154	14,109
Investments				12,500
Observable price adjustments on non-marketable equity securities
Unrealized gains (losses) on marketable equity securities
Realized gains on marketable and non-marketable equity securities
Reclassifications
Impairment of investments
Loss attributable to equity method investments			(3,300)	(4,928)
Carrying value at the end of the period	$ 13,854	$ 21,681	$ 13,854	$ 21,681