Annual report pursuant to Section 13 and 15(d)

Document and Entity Information

Document and Entity Information - USD ($)
12 Months Ended
Nov. 30, 2019
May 06, 2020
May 31, 2019
Document and Entity Information [Abstract]      
Document Type 10-K    
Amendment Flag false    
Document Period End Date Nov. 30, 2019    
Entity Registrant Name Byrna Technologies Inc.    
Entity Central Index Key 0001354866    
Current Fiscal Year End Date --11-30    
Entity Filer Category Non-accelerated Filer    
Entity Common Stock, Shares Outstanding   124,792,754  
Entity Current Reporting Status No    
Entity Voluntary Filers Yes    
Entity Interactive Data Current Yes    
Entity Well Known Seasoned Issuer No    
Entity Public Float     $ 15,827,958.16
Document Fiscal Year Focus 2019    
Document Fiscal Period Focus FY    
Entity Shell Company false    
Entity Small Business true    
Entity Emerging Growth Company false