Investments (Schedule Of Investments) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2019	Dec. 31, 2018
Investments			$ 21,841	$ 27,967
Impairment of investments			(5,419)	(2,959)
Loss attributable to equity method investments	$ (6,924)	$ (3,375)	(13,786)	(3,375)
Carrying value of investments	54,739	62,859	54,739	62,859
Equity Method Investments [Member]
Balance at the beginning of the period			21,667
Investments			17,500	25,000
Loss attributable to equity method investments			(13,786)	(3,375)
Carrying value of investments	25,381	21,625	25,381	21,625
Non-marketable Securities [Member]
Balance at the beginning of the period			30,436	41,226
Investments			4,341	2,967
Impairment of investments			(5,419)	(2,959)
Carrying value of investments	$ 29,358	$ 41,234	$ 29,358	$ 41,234