v3.25.4
Cover
Feb. 11, 2026
Cover [Abstract]  
Entity Registrant Name Cognex Corporation
Document Type 8-K
Document Period End Date Feb. 11, 2026
Entity Address, State or Province MA
Entity Address, Postal Zip Code 01760
Entity Address, Address Line One One Vision Drive
Entity Address, City or Town Natick
City Area Code 508
Local Phone Number 650-3000
Entity Incorporation, State or Country Code MA
Entity File Number 001-34218
Entity Tax Identification Number 04-2713778
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Title of 12(b) Security Common stock, par value $.002 per share
Trading Symbol CGNX
Security Exchange Name NASDAQ
Entity Emerging Growth Company false