XML 56 R1.htm IDEA: XBRL DOCUMENT v2.4.0.8
Document and Entity Information
6 Months Ended
Jun. 29, 2014
Document And Entity Information [Abstract]  
Document Type 10-Q
Amendment Flag false
Document Period End Date Jun. 29, 2014
Document Fiscal Year Focus 2014
Document Fiscal Period Focus Q2
Entity Registrant Name COGNEX CORP
Entity Central Index Key 0000851205
Current Fiscal Year End Date --12-31
Entity Filer Category Large Accelerated Filer
Entity Common Stock, Shares Outstanding 86,739,203