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Significant Accounting Policies (Tables)
 12 Months Ended
Dec. 31, 2014
Accounting Policies [Abstract]  
Computation of Basic and Diluted Loss Per Share

The following table sets forth the computation of basic and diluted loss per share for the years ended December 31 (in thousands, except per share amounts):

 

     2014      2013      2012  

Numerator:

         

Net loss attributable to Vicor Corporation

    $ (13,887 )     $ (23,640 )     $ (4,077 ) 
  

 

 

     

 

 

     

 

 

  

Denominator:

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

   38,569     39,195     41,811  

Effect of dilutive securities:

Employee stock options (2)

   —     —     —  
  

 

 

     

 

 

     

 

 

  

Denominator for diluted loss per share — adjusted weighted-average shares and assumed conversions (3)

   38,569     39,195     41,811  
  

 

 

     

 

 

     

 

 

  

Basic loss per share

 $ (0.36 )  $ (0.60 )  $ (0.10 ) 
  

 

 

     

 

 

     

 

 

  

Diluted loss per share

 $ (0.36 )  $ (0.60 )  $ (0.10 ) 
  

 

 

     

 

 

     

 

 

  

 

(1) Denominator represents weighted average number of Common Shares and Class B Common Shares outstanding.

 

(2) Options to purchase 1,895,675, 1,989,248, and 545,345 shares of Common Stock in 2014, 2013, and 2012, respectively, were not included in the calculation of net loss per share as the effect would have been antidilutive.

 

(3) Denominator represents weighted average number of Common Shares and Class B Common Shares outstanding for the year, adjusted to include the dilutive effect, if any, of outstanding options.