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Supplemental Cash Flow Information (Cash Flow Movements If Cash Had Been Transferred) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2013
Other Significant Noncash Transactions [Line Items]      
Issue of shares of the Company's common stock to BEE partners $ 2,045 $ 198 $ 240
Purchase of shares from BEE partners (9,151)    
Black Economic Empowerment [Member] | If Cash Had Actually Flowed Between The Parties [Member]      
Other Significant Noncash Transactions [Line Items]      
Loans provided to BEE partners (25,054)    
Loans repaid by BEE partners 24,574    
Issue of shares of the Company's common stock to BEE partners 25,054    
Purchase of shares from BEE partners $ (24,858)