Condensed Consolidated Statements of Comprehensive Income (Loss) (USD $) In Thousands, unless otherwise specified	3 Months Ended				6 Months Ended
	Jun. 30, 2014		Jun. 30, 2013		Jun. 30, 2014		Jun. 30, 2013
Statement Of Income And Comprehensive Income [Abstract]
Consolidated net loss	$ (4,932)		$ (4,600)		$ (10,358)		$ (9,586)
Foreign currency translation gains (losses), net of tax provision (benefit)	71	[1]	(135)	[1]	148	[1]	(403)	[1]
Unrealized gains on available-for-sale securities, net of tax	19	[2]	64	[2]	56	[2]	115	[2]
Other comprehensive income (loss)	90		(71)		204		(288)
Consolidated comprehensive loss	(4,842)		(4,671)		(10,154)		(9,874)
Less: Comprehensive loss attributable to noncontrolling interest	(92)		(1)		(135)		(25)
Comprehensive loss attributable to Vicor Corporation	$ (4,750)		$ (4,670)		$ (10,019)		$ (9,849)

[1] Net of tax benefit of $0 and $76 for the three months ended June 30, 2014 and 2013, respectively. Net of tax benefit of $0 and $217 for the six months ended June 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 June 30, 2014 and 2013. Therefore, there is no net income tax provision (benefit) recognized for the three and six months ended June 30, 2014 and 2013.