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Borrowings (Summary Of Long-Term Borrowings) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Jun. 30, 2017
Debt Instrument [Line Items]      
Current portion of long-term borrowings   $ 44,695 $ 8,738
Long-term borrowings   5,469 [1] 7,501
Beginning Balance $ 50,164 16,239  
Utilized 14,613 113,157 [2] 800 [2]
Repaid (37,357) (77,062) [2] (37,318) [2]
DNI acquisition (Note 3)   616  
Deconsolidated (Note 2) (10,435)    
Foreign currency adjustment [3] (1,974) (2,786)  
Ending Balance   50,164 16,239
Sale of DNI Shares [Member]      
Debt Instrument [Line Items]      
Repaid (15,011)    
South Korea [Member] | Continuing [Member]      
Debt Instrument [Line Items]      
Current portion of long-term borrowings     8,738
Long-term borrowings     7,501
Beginning Balance   16,239  
Utilized   197  
Repaid   (16,592)  
Foreign currency adjustment [3]   156  
Ending Balance     $ 16,239
Amended July 2017 [Member] | South Korea [Member] | Continuing [Member]      
Debt Instrument [Line Items]      
Current portion of long-term borrowings   44,079  
Long-term borrowings   5,469  
Beginning Balance 49,548    
Utilized   112,960  
Repaid (31,844) (60,470)  
Foreign currency adjustment [3] (2,693) (2,942)  
Ending Balance   49,548  
Amended July 2017 [Member] | South Korea [Member] | Continuing [Member] | Sale of DNI Shares [Member]      
Debt Instrument [Line Items]      
Repaid (15,011)    
June 2018 Facility [Member] | South Africa [Member] | Discontinued [Member]      
Debt Instrument [Line Items]      
Utilized 14,613    
Repaid (4,944)    
Deconsolidated (Note 2) (10,435)    
Foreign currency adjustment [3] 766    
Other (Note 2) [Member] | South Africa [Member] | Discontinued [Member]      
Debt Instrument [Line Items]      
Current portion of long-term borrowings   616  
Beginning Balance 616    
Repaid (569)    
DNI acquisition (Note 3)   616  
Foreign currency adjustment [3] $ (47)    
Ending Balance   $ 616  
[1] Certain amounts have been restated to correct the misstatement discussed in Note 1.
[2] Certain amounts have been restated to correct the misstatement discussed in Note 1.
[3] Represents the effects of the fluctuations between the ZAR and the Korean won, against the U.S. dollar.