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Stock-Based Compensation Plans and Awards (Tables)
9 Months Ended
Sep. 30, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Summary of Stock Option Activity

A summary of stock option activity for the nine months ended September 30, 2015 is as follows:

 

    Options Outstanding
Stock Options
    Weighted-Average
Exercise Price
    Aggregate
Intrinsic Value
 
Balance as of December 31, 2014     5,303,334     $ 1.30     $  
Cancelled     (3,675,334 )     0.74          
Balance as of September 30, 2015     1,628,000     $ 1.04     $  
                         
Equity awards available for grant, net of restricted stock (811,576) at September 30, 2015     7,560,424