Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Statement of Comprehensive Income [Abstract]
Consolidated net income (loss)		$ (6,261)	$ 5,159	$ (14,070)
Foreign currency translation gains (losses), net of tax benefit	[1]	52	(52)	(410)
Unrealized (losses) gains on available-for-sale securities, net of tax	[1]	(31)	(59)	429
Other comprehensive income (loss)		21	(111)	19
Consolidated comprehensive income (loss)		(6,240)	5,048	(14,051)
Less: Comprehensive income (loss) attributable to noncontrolling interest		(9)	227	(219)
Comprehensive income (loss) attributable to Vicor Corporation		$ (6,231)	$ 4,821	$ (13,832)

[1] The deferred tax assets associated with cumulative foreign currency translation gains (losses) and cumulative unrealized losses on available for sale securities are completely offset by a tax valuation allowance as of December 31, 2016, 2015, and 2014. Therefore, there is no income tax benefit (provision) recognized for the three years ended December 31, 2016.