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		6 Months Ended
		Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Numerator:
Net income attributable to Vicor Corporation		$ 17,101	$ 10,593	$ 28,345	$ 15,592
Denominator:
Denominator for basic net income per share-weighted average shares	[1]	44,230	43,973	44,196	43,963
Effect of dilutive securities:
Employee stock options	[2]	676	893	711	947
Denominator for diluted net income per share - adjusted weighted-average shares and assumed conversions		44,906	44,866	44,907	44,910
Basic net income per share		$ 0.39	$ 0.24	$ 0.64	$ 0.35
Diluted net income per share		$ 0.38	$ 0.24	$ 0.63	$ 0.35

[1] Denominator represents the weighted average number of shares of Common Stock and Class B Common Stock outstanding.

[2] Options to purchase 1,574,000 and 1,307,000 shares of Common Stock for the three and six months ended June 30, 2023, respectively, and options to purchase 898,640 and 658,014 shares of Common Stock for the three and six months ended June 30, 2022, respectively, were not included in the calculations of net income per share as the effect would have been antidilutive.