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Investments (Schedule Of Investments) (Details) - USD ($) $ in Thousands | Sep. 30, 2020 | Jun. 30, 2020 | Sep. 30, 2019 | Jun. 30, 2019
--- | --- | --- | --- | ---
Fair value | $ 19,045 |  |  |
Measurement alternative | 21,410 | $ 30,033 |  |
Equity method | 18,071 | 14,109 |  |
Total | 58,526 | 44,142 |  |
Non-marketable Securities [Member] |  |  |  |
Measurement alternative | $ 21,410 | $ 30,033 | $ 30,587 | $ 30,436

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