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Net Income per Share - Summary of Computation Of Basic And Diluted Net Income (Loss) Per Share (Detail) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
 3 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Numerator:    
Net income attributable to Vicor Corporation $ 11,244 $ 4,999
Denominator:    
Denominator for basic net income per share- weighted average shares [1] 44,162 43,952
Effect of dilutive securities:    
Employee stock options [2] 745 1,002
Denominator for diluted net income per share- adjusted weighted-average shares and assumed conversions 44,907 44,954
Basic net income per share $ 0.25 $ 0.11
Diluted net income per share $ 0.25 $ 0.11
[1] Denominator represents the weighted average number of shares of Common Stock and Class B Common Stock outstanding.
[2] Options to purchase 1,035,618 and 291,880 shares of Common Stock for the three months ended March 31, 2023 and 2022, respectively, were not included in the calculations of net income per share as the effect would have been antidilutive.