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Net Income per Share (Tables)
 3 Months Ended
Mar. 31, 2022
Earnings Per Share [Abstract]  
Computation of Basic and Diluted Net Income Per Share
The following table sets forth the computation of basic and diluted net income per share (in thousands, except per share amounts):    
 
     Three Months Ended  
     March 31,  
     2022      2021  
Numerator:
                  
Net income attributable to Vicor Corporation
    $ 4,999      $ 15,092  
    
 
 
     
 
 
  
Denominator:
                  
Denominator for basic net income per share-weighted average shares (1)
      43,952        43,455  
Effect of dilutive securities:
 
Employee stock options (2)
      1,002        1,386  
    
 
 
     
 
 
  
Denominator for diluted net income per share – adjusted weighted-average shares and assumed conversions
      44,954        44,841  
    
 
 
     
 
 
  
Basic net income per share
    $ 0.11      $ 0.35  
    
 
 
     
 
 
  
Diluted net income per share
    $ 0.11      $ 0.34  
    
 
 
     
 
 
  
 
(1)
Denominator represents weighted average number of shares of Common Stock and Class B Common Stock outstanding.
(2)
Options to purchase 291,880 and 40,339 shares of Common Stock for the three months ended March 31, 2022 and 2021, respectively, were not included in the calculations of net income per share as the effect would have been antidilutive.