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Fair Value Of Financial Instruments (Carrying Value Of Assets And Liabilities Measured On Recurring Basis) (Details) - Recurring [Member] - USD ($)
$ in Thousands
6 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Assets    
Beginning balance, Carrying value $ 181,880  
Ending balance, Carrying value 157,988  
Liabilities    
Beginning balance, Carrying value 27,222  
Ending balance, Carrying value 26,885  
Significant Unobservable Inputs (Level 3) [Member]    
Assets    
Beginning balance, Carrying value 172,948 $ 151,003
Loss on fair value re-measurements (15,836)  
Foreign currency adjustment (8,054) 10,692
Ending balance, Carrying value 149,058 $ 161,695
Liabilities    
Beginning balance, Carrying value 27,222  
Accretion of interest 835  
Foreign currency adjustment [1] (1,267)  
Ending balance, Carrying value $ 26,790  
[1] The foreign currency adjustment represents the effects of the fluctuations of the South African rand and the U.S. dollar on the carrying value.