Condensed Consolidated Statements of Comprehensive Income (Loss) (USD $) In Thousands, unless otherwise specified	3 Months Ended				9 Months Ended
	Sep. 30, 2014		Sep. 30, 2013		Sep. 30, 2014		Sep. 30, 2013
Statement of Comprehensive Income [Abstract]
Consolidated net loss	$ (3,669)		$ (898)		$ (14,027)		$ (10,484)
Foreign currency translation gains (losses), net of tax provision (benefit)	(285)	[1]	22	[1]	(137)	[1]	(381)	[1]
Unrealized gains on available-for-sale securities, net of tax	39	[2]	61	[2]	95	[2]	176	[2]
Other comprehensive income (loss)	(246)		83		(42)		(205)
Consolidated comprehensive loss	(3,915)		(815)		(14,069)		(10,689)
Less: Comprehensive income (loss) attributable to noncontrolling interest	(18)		36		(153)		11
Comprehensive loss attributable to Vicor Corporation	$ (3,897)		$ (851)		$ (13,916)		$ (10,700)

[1] Net of tax provision of $0 and $12 for the three months ended September 30, 2014 and 2013, respectively. Net of tax benefit of $0 and $(205) for the nine months ended September 30, 2014 and 2013, respectively.

[2] The deferred tax assets associated with the unrealized gains on available-for-sale securities are completely offset by a tax valuation allowance as of September 30, 2014 and 2013. Therefore, there is no net income tax provision (benefit) recognized for the three and nine months ended September 30, 2014 and 2013.