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Stock Benefit Plans (Tables)
6 Months Ended
Dec. 31, 2012
Schedule of Weighted Average Black-Scholes Model Assumptions and Weighted Average Grant Date Fair Value of Employee Stock Options

price equal to the fair value of the common stock at the date of grant. The weighted average Black-Scholes model assumptions and the weighted average grant date fair value of employee stock options for the three and six months ended December 31, 2012 and 2011 were as follows:

 

     Three Months Ended
December 31,
    Six Months Ended
December 31,
 
     2012     2011     2012     2011  

Expected term (in years)

     4.6        4.6        4.6        4.6   

Expected volatility

     54     56     55     55

Expected dividend yield

     0.0     0.0     0.0     0.0

Risk-free interest rate

     0.8     0.9     0.7     1.1

Grant date fair value

   $ 3.07      $ 5.20      $ 3.97      $ 5.32