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Share-based Compensation (Tables)
 6 Months Ended
Dec. 31, 2013
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Assumptions for Fair Value Measurement of Stock Options
For the six months ended December 31, 2012, the fair value of stock option awards was estimated using the Black-Scholes option-pricing model with the following assumptions and weighted-average fair values:
 
Six Months Ended
December 31,
 
2013
 
2012
Risk-free interest rate
N/A
 
0.46% - 1.03%

Dividend yield
N/A
 
—
%
Expected life in years
N/A
 
3.0 - 6.0

Expected volatility
N/A
 
113% - 127%