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
		Mar. 31, 2025	Mar. 31, 2024
Numerator:
Net income (loss) attributable to Vicor Corporation		$ 2,539	$ (14,473)
Denominator:
Denominator for basic net income (loss) per share - weighted average shares	[1]	45,217	44,516
Effect of dilutive securities:
Employee stock options	[2]	278
Denominator for diluted net income (loss) per share - adjusted weighted-average shares and assumed conversions		45,495	44,516
Basic net income (loss) per share		$ 0.06	$ (0.33)
Diluted net income (loss) per share		$ 0.06	$ (0.33)

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

[2] Options to purchase 1,016,008 and 2,500,448 shares of Common Stock for the three months ended March 31, 2025 and 2024, respectively, were not included in the calculation of net income (loss) per share as the effect would have been antidilutive.