Condensed Consolidated Statements of Equity - USD ($) $ in Thousands	Total	Common Stock [Member]	Additional Paid-In Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Loss [Member]	Treasury Stock [Member]	Total Vicor Corporation Stockholders' Equity [Member]	Noncontrolling Interest [Member]	Class B Common Stock [Member] Common Stock [Member]
Beginning Balance at Dec. 31, 2022	$ 464,336	$ 441	$ 360,365	$ 243,079	$ (988)	$ (138,927)	$ 464,088	$ 248	$ 118
Issuance of Common Stock under employee stock plans	10,503	4	10,499				10,503
Stock-based compensation expense	9,287		9,287				9,287
Components of comprehensive (loss) income, net of tax:
Net income	44,936			44,927			44,927	9
Other comprehensive income (loss)	(278)				(257)		(257)	(21)
Consolidated comprehensive income (loss)	44,658						44,670	(12)
Ending Balance at Sep. 30, 2023	528,784	445	380,151	288,006	(1,245)	(138,927)	528,548	236	118
Beginning Balance at Jun. 30, 2023	501,019	443	368,914	271,424	(1,195)	(138,927)	500,777	242	118
Issuance of Common Stock under employee stock plans	7,781	2	7,779				7,781
Stock-based compensation expense	3,458		3,458				3,458
Components of comprehensive (loss) income, net of tax:
Net income	16,583			16,582			16,582	1
Other comprehensive income (loss)	(57)				(50)		(50)	(7)
Consolidated comprehensive income (loss)	16,526						16,532	(6)
Ending Balance at Sep. 30, 2023	528,784	445	380,151	288,006	(1,245)	(138,927)	528,548	236	118
Beginning Balance at Dec. 31, 2023	541,106	445	383,832	296,674	(1,273)	(138,927)	540,869	237	118
Issuance of Common Stock under employee stock plans	7,047	7	7,040				7,047
Stock-based compensation expense	11,245		11,245				11,245
Repurchases of common stock	(497)					(497)	(497)
Components of comprehensive (loss) income, net of tax:
Net income	(4,103)			(4,117)			(4,117)	14
Other comprehensive income (loss)	72				75		75	(3)
Consolidated comprehensive income (loss)	(4,031)						(4,042)	11
Ending Balance at Sep. 30, 2024	554,870	452	402,117	292,557	(1,198)	(139,424)	554,622	248	118
Beginning Balance at Jun. 30, 2024	537,457	451	396,175	281,005	(1,583)	(138,927)	537,239	218	118
Issuance of Common Stock under employee stock plans	1,909	1	1,908				1,909
Stock-based compensation expense	4,034		4,034				4,034
Repurchases of common stock	(497)					(497)	(497)
Components of comprehensive (loss) income, net of tax:
Net income	11,554			11,552			11,552	2
Other comprehensive income (loss)	413				385		385	28
Consolidated comprehensive income (loss)	11,967						11,937	30
Ending Balance at Sep. 30, 2024	$ 554,870	$ 452	$ 402,117	$ 292,557	$ (1,198)	$ (139,424)	$ 554,622	$ 248	$ 118