Significant Accounting Policies - Computation Of Basic And Diluted Net Income (Loss) Per Share (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands		12 Months Ended
		Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Numerator:
Net income attributable to Vicor Corporation		$ 6,129	$ 53,595	$ 25,446
Denominator:
Denominator for basic net income per share- weighted average shares	[1]	44,912	44,320	44,005
Effect of dilutive securities:
Employee stock options	[2]	256	684	889
Denominator for diluted net income per share- adjusted weighted-average shares and assumed conversions	[3]	45,168	45,004	44,894
Basic net income per share		$ 0.14	$ 1.21	$ 0.58
Diluted net income per share		$ 0.14	$ 1.19	$ 0.57

[1] Denominator represents weighted average number of Common Shares and Class B Common Shares outstanding

[2] Options to purchase 2,504,068, 1,557,927 and 879,228 shares of Common Stock in 2024, 2023, and 2022, respectively, were not included in the calculation of net income per share as the effect would have been antidilutive.

[3] Denominator represents weighted average number of Common Shares and Class B Common Shares outstanding for the year, adjusted to include the dilutive effect, if any, of outstanding options.