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Quarterly Results of Operations (Unaudited) - Summary of Unaudited Quarterly Financial Data (Detail) (USD $)
In Thousands, except Per Share data, unless otherwise specified
 3 Months Ended 12 Months Ended
Dec. 31, 2013
Sep. 30, 2013
Jun. 30, 2013
Mar. 31, 2013
Dec. 31, 2012
Sep. 30, 2012
Jun. 30, 2012
Mar. 31, 2012
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Quarterly Financial Information Disclosure [Abstract]                      
Net revenues $ 55,258 $ 55,091 $ 46,865 $ 41,946 $ 50,424 $ 52,948 $ 55,467 $ 59,668 $ 199,160 $ 218,507 $ 252,968
Gross margin 23,431 22,980 18,461 16,607 20,125 22,953 24,106 24,467 81,479 91,651 106,694
Consolidated net income (loss) (13,020) (898) (4,600) (4,986) (4,663) 280 244 341 (23,504) (3,798) 9,309
Net income attributable to noncontrolling interest 82 34 16 4 151 89 24 15 136 279 466
Net income (loss) attributable to Vicor Corporation $ (13,102) $ (932) $ (4,616) $ (4,990) $ (4,814) $ 191 $ 220 $ 326 $ (23,640) $ (4,077) $ 8,843
Net income (loss) per share attributable to Vicor Corporation:                      
Basic and diluted $ (0.34) $ (0.02) $ (0.12) $ (0.12) $ (0.12)   $ 0.01 $ 0.01 $ (0.60) $ (0.10)