XML 12 R1.htm IDEA: XBRL DOCUMENT v3.5.0.2
Document and Entity Information - shares
 9 Months Ended
Sep. 30, 2016
Oct. 21, 2016
Document Information [Line Items]    
Document Type 10-Q  
Amendment Flag false  
Document Period End Date Sep. 30, 2016  
Document Fiscal Year Focus 2016  
Document Fiscal Period Focus Q3  
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   27,097,656
Class B Common Stock [Member]    
Document Information [Line Items]    
Entity Common Stock, Shares Outstanding   11,758,218