Quarterly report pursuant to Section 13 or 15(d)

Cover Page

Cover Page - shares
9 Months Ended
Sep. 30, 2022
Nov. 02, 2022
Document Information [Line Items]    
Document Type 10-Q  
Amendment Flag false  
Document Quarterly Report true  
Document Period End Date Sep. 30, 2022  
Document Transition Report false  
Document Fiscal Year Focus 2022  
Document Fiscal Period Focus Q3  
Entity File Number 001-38161  
Entity Registrant Name Calyxt, Inc.  
Entity Central Index Key 0001705843  
Entity Incorporation, State or Country Code DE  
Entity Tax Identification Number 27-1967997  
Current Fiscal Year End Date --12-31  
Entity Address, Address Line One 2800 Mount Ridge Road  
Entity Address, City or Town Roseville  
Entity Address, State or Province MN  
Entity Address, Postal Zip Code 55113-1127  
City Area Code 651  
Local Phone Number 683-2807  
Title of 12(b) Security Common Stock (0.0001 par value)  
Trading Symbol CLXT  
Security Exchange Name NASDAQ  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Non-accelerated Filer  
Entity Small Business false  
Entity Emerging Growth Company true  
Entity Ex Transition Period false  
Entity Shell Company false  
Entity Common Stock, Shares Outstanding   48,841,286