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Fair Value Of Financial Instruments (Outstanding Foreign Exchange Contracts) (Details)
12 Months Ended
Jun. 30, 2015
EUR (€)
ZAR / item
Jun. 30, 2014
EUR (€)
ZAR / item
Jun. 30, 2015
ZAR / shares
Jun. 30, 2014
ZAR / shares
Foreign Exchange Contract 1 [Member]        
Derivatives, Fair Value [Line Items]        
Notional amount | € € 526,263.00 € 182,272.50    
Strike price (ZAR) | ZAR / item 15.1145 15.2077    
Fair market value price (ZAR)     ZAR 13.6275 ZAR 14.5803
Maturity Jul. 20, 2015 Jul. 21, 2014    
Foreign Exchange Contract 2 [Member]        
Derivatives, Fair Value [Line Items]        
Notional amount | € € 526,263.00 € 182,272.50    
Strike price (ZAR) | ZAR / item 15.2025 15.3488    
Fair market value price (ZAR)     13.7062 14.5803
Maturity Aug. 20, 2015 Jul. 21, 2014    
Foreign Exchange Contract 3 [Member]        
Derivatives, Fair Value [Line Items]        
Notional amount | € € 526,263.00 € 180,022.50    
Strike price (ZAR) | ZAR / item 15.2944 15.4228    
Fair market value price (ZAR)     13.7898 14.6542
Maturity Sep. 21, 2015 Aug. 20, 2014    
Foreign Exchange Contract 4 [Member]        
Derivatives, Fair Value [Line Items]        
Notional amount | € € 526,263.00 € 180,022.50    
Strike price (ZAR) | ZAR / item 15.3809 15.2819    
Fair market value price (ZAR)     13.8683 14.6542
Maturity Oct. 20, 2015 Aug. 20, 2014    
Foreign Exchange Contract 5 [Member]        
Derivatives, Fair Value [Line Items]        
Notional amount | € € 509,516.00 € 180,022.50    
Strike price (ZAR) | ZAR / item 15.4728 15.3623    
Fair market value price (ZAR)     13.9540 14.7367
Maturity Nov. 20, 2015 Sep. 22, 2014    
Foreign Exchange Contract 6 [Member]        
Derivatives, Fair Value [Line Items]        
Notional amount | € € 529,865.00 € 180,022.50    
Strike price (ZAR) | ZAR / item 15.5654 15.5041    
Fair market value price (ZAR)     14.0397 14.7367
Maturity Dec. 21, 2015 Sep. 22, 2014    
Foreign Exchange Contract 7 [Member]        
Derivatives, Fair Value [Line Items]        
Notional amount | € € 526,663.00 € 181,570.50    
Strike price (ZAR) | ZAR / item 15.6625 15.5739    
Fair market value price (ZAR)     ZAR 14.1239 14.8119
Maturity Jan. 20, 2016 Oct. 20, 2014    
Foreign Exchange Contract 8 [Member]        
Derivatives, Fair Value [Line Items]        
Notional amount | €   € 181,570.50    
Strike price (ZAR) | ZAR / item   15.4316    
Fair market value price (ZAR)       14.8119
Maturity   Oct. 20, 2014    
Foreign Exchange Contract 9 [Member]        
Derivatives, Fair Value [Line Items]        
Notional amount | €   € 180,022.50    
Strike price (ZAR) | ZAR / item   15.6552    
Fair market value price (ZAR)       14.8982
Maturity   Nov. 20, 2014    
Foreign Exchange Contract 10 [Member]        
Derivatives, Fair Value [Line Items]        
Notional amount | €   € 180,022.50    
Strike price (ZAR) | ZAR / item   15.5136    
Fair market value price (ZAR)       14.8982
Maturity   Nov. 20, 2014    
Foreign Exchange Contract 11 [Member]        
Derivatives, Fair Value [Line Items]        
Notional amount | €   € 180,022.50    
Strike price (ZAR) | ZAR / item   15.5970    
Fair market value price (ZAR)       14.9874
Maturity   Dec. 22, 2014    
Foreign Exchange Contract 12 [Member]        
Derivatives, Fair Value [Line Items]        
Notional amount | €   € 180,022.50    
Strike price (ZAR) | ZAR / item   15.7391    
Fair market value price (ZAR)       14.9874
Maturity   Dec. 22, 2014    
Foreign Exchange Contract 13 [Member]        
Derivatives, Fair Value [Line Items]        
Notional amount | €   € 174,424.50    
Strike price (ZAR) | ZAR / item   15.8119    
Fair market value price (ZAR)       15.0671
Maturity   Jan. 20, 2015    
Foreign Exchange Contract 14 [Member]        
Derivatives, Fair Value [Line Items]        
Notional amount | €   € 174,424.50    
Strike price (ZAR) | ZAR / item   15.6729    
Fair market value price (ZAR)       ZAR 15.0671
Maturity   Jan. 20, 2015