v2.4.0.8
Document and Entity Information
6 Months Ended
Jul. 04, 2015
Aug. 04, 2015
Document Information [Line Items]    
Document Type 10-Q  
Amendment Flag false  
Document Period End Date Jul. 04, 2015  
Document Fiscal Year Focus 2015  
Document Fiscal Period Focus Q2  
Trading Symbol IVAC  
Entity Registrant Name INTEVAC INC  
Entity Central Index Key 0001001902  
Current Fiscal Year End Date --01-03  
Entity Filer Category Accelerated Filer  
Entity Common Stock, Shares Outstanding   22,135,828