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Investments (Narrative) (Details) - USD ($)
$ in Thousands
12 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Jun. 30, 2017
Investments [Abstract]      
Aggregate carrying amount of equity investments $ 52,103 $ 41,226 $ 38,324
Impairment losses related to equity investments 15,007 11,593 $ 1,955
Carrying value of equity method investments $ 21,700 $ 0