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Net Loss Per Share
6 Months Ended
Jun. 30, 2015
Earnings Per Share [Abstract]  
Net Loss Per Share

(2) Net Loss Per Share

The Company calculates basic earnings per share by dividing loss attributable to common stockholders by the weighted average common shares outstanding during the period, excluding common stock subject to vesting provisions. Diluted earnings per share is computed by dividing loss attributable to common stockholders by the weighted average number of common shares outstanding during the period increased to include, if dilutive, the number of additional common shares that would have been outstanding if the potential common shares had been issued. The Company’s potentially dilutive shares include stock options, restricted stock units and warrants for common stock.

 

Because we reported a net loss for the three and six months ended June 30, 2015 and 2014, all potentially dilutive shares of common stock have been excluded from the computation of the dilutive net loss per share for all periods presented.  As of June 30, 2015, the only outstanding warrants in-the-money were issued in June 2015, which are not exercisable until December 2015, and no material outstanding stock options were in-the-money, other than the options granted in 2015.  See Notes 7 and 8 for further details.  Such potentially dilutive shares of common stock consist of the following:

 

 

 

June 30,

 

 

2015

 

 

2014

 

Potentially dilutive securities, excluded:

 

 

 

 

 

 

 

Outstanding stock options

 

1,199,029

 

 

 

1,040,015

 

Unvested restricted stock units

 

629,383

 

 

 

610,700

 

Warrants to purchase common stock

 

26,179,634

 

 

 

9,371,002

 

 

 

28,008,046

 

 

 

11,021,717