v3.19.3
Document and Entity Information - shares
9 Months Ended
Sep. 28, 2019
Oct. 24, 2019
Cover [Abstract]    
Entity Registrant Name IRIDEX CORP  
Entity Central Index Key 0001006045  
Document Type 10-Q  
Document Period End Date Sep. 28, 2019  
Amendment Flag false  
Document Fiscal Year Focus 2019  
Document Fiscal Period Focus Q3  
Current Fiscal Year End Date --12-28  
Trading Symbol IRIX  
Entity Filer Category Non-accelerated Filer  
Entity Shell Company false  
Entity Current Reporting Status Yes  
Entity Small Business true  
Entity Emerging Growth Company false  
Entity File Number 0-27598  
Entity Tax Identification Number 77-0210467  
Entity Address, Address Line One 1212 Terra Bella Avenue  
Entity Address, City or Town Mountain View  
Entity Address, State or Province CA  
Entity Address, Postal Zip Code 94043-1824  
City Area Code 650  
Local Phone Number 940-4700  
Entity Common Stock, Shares Outstanding   13,781,752
Entity Interactive Data Current Yes  
Title of 12(b) Security Common Stock, par value $0.01 per share  
Security Exchange Name NASDAQ  
Entity Incorporation, State or Country Code DE  
Document Quarterly Report true  
Document Transition Report false