Net Income (Loss) 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		9 Months Ended
		Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Numerator:
Net income (loss) attributable to Vicor Corporation		$ 11,552	$ 16,582	$ (4,117)	$ 44,927
Denominator:
Denominator for basic net income (loss) per share-weighted average shares	[1]	45,117	44,433	44,829	44,275
Effect of dilutive securities:
Employee stock options	[2]	57	754		725
Denominator for diluted net income (loss) per share - adjusted weighted-average shares and assumed conversions		45,174	45,187	44,829	45,000
Basic net income (loss) per share		$ 0.26	$ 0.37	$ (0.09)	$ 1.01
Diluted net income (loss) per share		$ 0.26	$ 0.37	$ (0.09)	$ 1

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

[2] Options to purchase 2,875,975 and 2,971,033 shares of Common Stock for the three and nine months ended September 30, 2024, respectively, were not included in the calculation of net income (loss) per share as the effect would have been antidilutive. Options to purchase 1,012,045 and 1,473,749 shares of Common Stock for the three and nine months ended September 30, 2023, respectively, were not included in the calculation of net income per share as the effect would have been antidilutive.