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Share-Based Payments (Assumptions Used) (Details) (Stock Options, USD $)
9 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Stock Options
   
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract]    
Expected volatility 80.00% 80.00%
Risk-free interest rate 1.70% 0.92%
Expected dividend yield 0.00% 0.00%
Expected life (in years) 6 years 0 months 12 days 6 years 5 months 16 days
Estimated fair value per option granted (in dollars per share) $ 38.40 $ 76.00