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Net Loss per Share
12 Months Ended
Dec. 31, 2014
Earnings Per Share [Abstract]  
Net Loss per Share
Net Loss per Share
Basic net loss per share is computed by dividing net loss by the weighted-average number of shares of common stock outstanding, less RSAs subject to forfeiture. Diluted net loss per share is computed by dividing net loss by the weighted-average number of shares of common stock outstanding, less RSAs subject to forfeiture, plus all additional common shares that would have been outstanding, assuming dilutive potential common shares had been issued for other dilutive securities. For all periods presented, diluted and basic net loss per share were identical since potential common shares were excluded from the calculation, as their effect was anti-dilutive.
Anti-Dilutive Securities
In periods of net loss, the weighted average number of shares outstanding related to potentially dilutive securities, prior to the application of the treasury stock method, are excluded from the computation of diluted net loss per common share because including such shares would have an anti-dilutive effect. The following shares were not included in the computation of diluted net loss per share (in thousands):
 
Years Ended December 31,
 
2014
 
2013
 
2012
Shares issuable under Equity Incentive Plan
6,193

 
6,722

 
7,091

Shares issuable upon the conversion of warrants
75

 
75

 
260

Total anti-dilutive securities
6,268

 
6,797

 
7,351