Investments (Schedule Of Reconciliation Of Changes In Investments) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2020	Dec. 31, 2019
Equity Method Investments
Balance at the beginning of the period			$ 14,109
Loss attributable to equity method investments	$ 2,640	$ 6,924	4,928	$ 13,786
Carrying value of equity method investments	21,681		21,681
Equity Method Investments [Member]
Equity Method Investments
Balance at the beginning of the period			14,109	21,667
Investments			12,500	17,500
Loss attributable to equity method investments			(4,928)	(13,786)
Carrying value of equity method investments	$ 21,681	$ 25,381	$ 21,681	$ 25,381