Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands		12 Months Ended
		Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Statement [Abstract]
Net revenues		$ 359,364	$ 296,576	$ 262,977
Cost of revenues		181,164	165,129	140,011
Gross margin		178,200	131,447	122,966
Operating expenses:
Selling, general and administrative		69,484	63,163	62,557
Research and development		53,114	50,916	46,588
Total operating expenses		122,598	114,079	109,145
Income from operations		55,602	17,368	13,821
Other income (expense), net:
Total unrealized gains (losses) on available-for-sale securities, net		122	7	(16)
Portion of (gains) losses recognized in other comprehensive income		(118)	(3)	20
Net credit gains recognized in earnings		4	4	4
Other income (expense), net		1,199	1,089	1,062
Total other income (expense), net		1,203	1,093	1,066
Income before income taxes		56,805	18,461	14,887
Less: Provision for income taxes		176	539	778
Consolidated net income		56,629	17,922	14,109
Less: Net income attributable to noncontrolling interest		4	12	11
Net income attributable to Vicor Corporation		$ 56,625	$ 17,910	$ 14,098
Net income per common share attributable to Vicor Corporation:
Basic		$ 1.30	$ 0.42	$ 0.35
Diluted		$ 1.26	$ 0.41	$ 0.34
Shares used to compute net income per common share attributable to Vicor Corporation:
Basic	[1]	43,651	42,186	40,330
Diluted	[2]	44,966	43,869	41,677

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

[2] 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.