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Net Income (Loss) per Share
 3 Months Ended
Mar. 31, 2015
Earnings Per Share [Abstract]  
Net Income (Loss) per Share
5. Net Income (Loss) per Share

The following table sets forth the computation of basic and diluted net income (loss) per share for the three months ended March 31 (in thousands, except per share amounts):

 

     Three Months Ended
March 31,		  
     2015      2014  

Numerator:

      

Net income (loss) attributable to Vicor Corporation

    $ 3,371      $ (5,378 ) 
  

 

 

     

 

 

  

Denominator:

Denominator for basic net income (loss) per share-weighted average shares (1)

   38,689     38,541  

Effect of dilutive securities:

Employee stock options (2)

   460     —    
  

 

 

     

 

 

  

Denominator for diluted net income (loss) per share – adjusted weighted-average shares and assumed conversions

   39,149     38,541  
  

 

 

     

 

 

  

Basic net income (loss) per share

 $ 0.09   $ (0.14 ) 
  

 

 

     

 

 

  

Diluted net income (loss) per share

 $ 0.09   $ (0.14 ) 
  

 

 

     

 

 

  

 

(1) Denominator represents weighted average number of shares of Common Stock and Class B Common Stock outstanding.
(2) Options to purchase 112,929 and 1,981,028 shares of Common Stock for the three months ended March 31, 2015 and 2014, respectively, were not included in the calculation of net loss per share as the effect would have been antidilutive.