XML 49 R1.htm IDEA: XBRL DOCUMENT v3.20.1
Document and Entity Information - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2019
Mar. 29, 2020
Jun. 30, 2019
Cover [Abstract]      
Document Type 10-K    
Document Annual Report true    
Document Period End Date Dec. 31, 2019    
Document Transition Report false    
Entity File Number 000-55264    
Entity Registrant Name DYADIC INTERNATIONAL, INC.    
Entity Incorporation, State or Country Code DE    
Entity Tax Identification Number 45-0486747    
Entity Address, Address Line One 140 Intracoastal Pointe Drive    
Entity Address, Address Line Two Suite 404    
Entity Address, City or Town Jupiter    
Entity Address, State or Province FL    
Entity Address, Postal Zip Code 33477    
City Area Code 561    
Local Phone Number 743-8333    
Title of 12(b) Security Common Stock, par value $0.001 per share    
Trading Symbol DYAI    
Security Exchange Name NASDAQ    
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category Non-accelerated Filer    
Entity Small Business true    
Entity Emerging Growth Company false    
Entity Shell Company false    
Entity Public Float     $ 169.7
Entity Common Stock, Shares Outstanding   27,359,157  
Entity Central Index Key 0001213809    
Current Fiscal Year End Date --12-31    
Document Fiscal Year Focus 2019    
Document Fiscal Period Focus FY    
Amendment Flag false