XML 39 R1.htm IDEA: XBRL DOCUMENT v3.8.0.1
Document And Entity Information - shares
 3 Months Ended
Mar. 30, 2018
Apr. 27, 2018
Document Information [Line Items]    
Document Type 10-Q  
Amendment Flag false  
Document Period End Date Mar. 30, 2018  
Document Fiscal Year Focus 2018  
Document Fiscal Period Focus Q1  
Entity Registrant Name STAAR SURGICAL CO  
Entity Central Index Key 0000718937  
Current Fiscal Year End Date --12-29  
Entity Filer Category Accelerated Filer  
Trading Symbol STAA  
Entity Common Stock, Shares Outstanding   41,620,416