XML 27 R58.htm IDEA: XBRL DOCUMENT v3.19.3
Net Income per Share - Computation Of Basic And Diluted Net Income Per Share (Detail) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Sep. 30, 2019
Sep. 30, 2018
Numerator:        
Net income attributable to Vicor Corporation $ 5,937 $ 13,012 $ 12,786 $ 24,815
Denominator:        
Denominator for basic net income per share-weighted average shares [1] 40,332 40,120 40,279 39,769
Effect of dilutive securities:        
Employee stock options [2] 1,862 1,004 1,156 876
Denominator for diluted net income per share - adjusted weighted-average shares and assumed conversions 42,194 41,124 41,435 40,645
Basic net income per share $ 0.15 $ 0.32 $ 0.32 $ 0.62
Diluted net income per share $ 0.14 $ 0.32 $ 0.31 $ 0.61
[1] Denominator represents weighted average number of shares of Common Stock and Class B Common Stock outstanding.
[2] Options to purchase 171,499 and 138,251 shares of Common Stock for the three and nine months ended September 30, 2019, respectively, and 54,818 and 47,573 shares of Common Stock for the three and nine months ended September 30, 2018, respectively, were not included in the calculations of net income per share as the effect would have been antidilutive.