Investments (Schedule Of Changes In Equity Investments) (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2021	Mar. 31, 2020
Balance at the beginning of the period				$ 44,142	$ 52,103
Investments				20,038	31,616
Observable price adjustments on non-marketable equity securities				1,000
Ongoing mark-to-market adjustments on marketable equity securities				8,442
Reclassifications	[1]
Impairment of investments					(14,519)
Loss attributable to equity method investments		$ (4,969)	$ (5,295)	(9,895)	(19,082)
Carrying value at the end of the period		63,727	50,118	63,727	50,118
Non-marketable Securities [Member]
Balance at the beginning of the period				30,033	30,436
Investments				2,538	14,116
Observable price adjustments on non-marketable equity securities				1,000
Ongoing mark-to-market adjustments on marketable equity securities
Reclassifications	[1]			(10,569)
Impairment of investments					(14,519)
Loss attributable to equity method investments
Carrying value at the end of the period		23,002	30,033	23,002	30,033
Marketable Securities [Member]
Balance at the beginning of the period
Investments				5,000
Observable price adjustments on non-marketable equity securities
Ongoing mark-to-market adjustments on marketable equity securities				8,442
Reclassifications	[1]			10,569
Impairment of investments
Loss attributable to equity method investments
Carrying value at the end of the period		24,011		24,011
Equity Method Investments [Member]
Balance at the beginning of the period				14,109	21,667
Investments				12,500	17,500
Observable price adjustments on non-marketable equity securities
Ongoing mark-to-market adjustments on marketable equity securities
Reclassifications	[1]
Impairment of investments
Loss attributable to equity method investments				(9,895)	(19,082)
Carrying value at the end of the period		$ 16,714	$ 20,085	$ 16,714	$ 20,085

[1] During the nine months ended March 31, 2021, one of our investments, which was previously accounted for under the measurement alternative, completed its initial public offering which resulted in a change of accounting methodology to fair value.