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Net Income per Share (Tables)
 3 Months Ended
Mar. 31, 2019
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,
 
 
 
2019
 
 
2018
 
Numerator:
 
 
 
 
 
 
 
 
Net income attributable to Vicor Corporation
 
$
4,286
 
 
$
3,943
 
Denominator:
 
 
 
 
 
 
 
 
Denominator for basic net income per share-weighted average shares (1)
 
 
40,229
 
 
 
39,479
 
Effect of dilutive securities:
 
 
 
 
 
 
 
 
Employee stock options (2)
 
 
800
 
 
 
688
 
Denominator for diluted net income per share – adjusted weighted-average shares and assumed conversions
 
 
41,029
 
 
 
40,167
 
Basic net income per share
 
$
0.11
 
 
$
0.10
 
Diluted net income per share
 
$
0.10
 
 
$
0.10
 
 
   
(1)
Denominator represents weighted average number of shares of Common Stock and Class B Common Stock outstanding. 
(2)
Options to purchase
134,535
and
82,241
shares of Common Stock for the three months ended March 31, 2019 and 2018, respectively, were not included in the calculation of net income per share as the effect would have been antidilutive.