XML 17 R1.htm IDEA: XBRL DOCUMENT v3.20.2
Document and Entity Information - shares
 9 Months Ended
Sep. 26, 2020
Oct. 28, 2020
Entity Registrant Name SUNOPTA INC.  
Entity Central Index Key 0000351834  
Document Type 10-Q  
Document Period End Date Sep. 26, 2020  
Document Fiscal Period Focus Q3  
Document Fiscal Year Focus 2020  
Entity Current Reporting Status Yes  
Current Fiscal Year End Date --01-02  
Document Transition Report false  
Document Quarterly Report true  
Entity Common Stock, Shares Outstanding   89,937,726
Entity Filer Category Accelerated Filer  
Entity Small Business false  
Entity Emerging Growth Company false  
Amendment Flag false  
Entity Shell Company false  
Entity File Number 001-34198  
Entity Address, Address Line One 2233 Argentia Road, Suite 401  
Entity Address, City or Town Mississauga  
City Area Code 905  
Local Phone Number 821-9669  
Entity Address, State or Province ON  
Entity Interactive Data Current Yes  
Entity Tax Identification Number 00-0000000  
Entity Incorporation, State or Country Code Z4  
Entity Address, Postal Zip Code L5N 2X7  
Entity Address, Country CA  
Entity Incorporation, Date of Incorporation Nov. 13, 1973  
The Nasdaq Stock Market | Common Shares    
Trading Symbol STKL  
Security Exchange Name NASDAQ  
Title of 12(b) Security Common Stock  
The Toronto Stock Exchange | Common Shares    
Trading Symbol SOY  
Title of 12(b) Security Common Shares