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Document and Entity Information - Jun. 30, 2015 - shares
Total
Document Information [Line Items]  
Document Type 10-Q
Amendment Flag false
Document Period End Date Jun. 30, 2015
Document Fiscal Year Focus 2015
Document Fiscal Period Focus Q2
Trading Symbol VICR
Entity Registrant Name VICOR CORP
Entity Central Index Key 0000751978
Current Fiscal Year End Date --12-31
Entity Filer Category Accelerated Filer
Common Stock [Member]  
Document Information [Line Items]  
Entity Common Stock, Shares Outstanding 27,015,475
Class B Common Stock [Member]  
Document Information [Line Items]  
Entity Common Stock, Shares Outstanding 11,758,218