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Share-based Compensation - Fair Value Assumptions (Details) (Employee Stock Option)
9 Months Ended
Mar. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Expected dividend rate 0.00%
Minimum expected volatility 113.00%
Maximum expected volatility 127.00%
Minimum
 
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Risk-free interest rate 0.46%
Expected term (in years) 3 years
Maximum
 
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Risk-free interest rate 1.19%
Expected term (in years) 6 years