Cover - USD ($)	12 Months Ended
Cover - USD ($)	Dec. 31, 2025	Mar. 24, 2026	Jun. 30, 2025
Cover [Abstract]
Document Type	10-K/A
Amendment Flag	true
Amendment description	Dyadic International, Inc. (the “Company”) is filing this Amendment No. 1 on Form 10-K/A (this “Amendment”) to the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2025 (the “Original Form 10-K”), which the Company filed with the Securities and Exchange Commission (the “SEC”) on March 25, 2026. This Amendment is being filed solely to include the information required by Part III of Form 10-K. This information was previously omitted from the Original Form 10-K in reliance on General Instruction G(3) to Form 10-K, which permits the information in Part III to be incorporated in the Form 10-K by reference from the Company’s definitive proxy statement if such statement is filed no later than 120 days after the Company’s fiscal year-end.Pursuant to Rule 12b-15 under the Securities Exchange Act of 1934, as amended (the “Exchange Act”), this Amendment also contains new certifications pursuant to Section 302 of the Sarbanes-Oxley Act of 2002, which are being filed as exhibits to this Amendment under Item 15 of Part IV. Because no financial statements have been included in this Form 10-K/A and this Form 10-K/A does not contain or amend any disclosure with respect to Items 307 and 308 of Regulation S-K, paragraphs 3, 4, and 5 of the certifications have been omitted. Except as described above, no other portion of the Original Form 10-K is amended hereby, and the Original Form 10-K continues to speak as of the date of the original filing of the Original Form 10-K. Accordingly, this Amendment should be read in conjunction with the Original Form 10-K and the Company’s filings made with the SEC subsequent to the date of the Original Form 10-K.
Document Annual Report	true
Document Transition Report	false
Document Period End Date	Dec. 31, 2025
Document Fiscal Period Focus	FY
Document Fiscal Year Focus	2025
Current Fiscal Year End Date	--12-31
Entity File Number	001-32513
Entity Registrant Name	DYADIC INTERNATIONAL, INC.
Entity Central Index Key	0001213809
Entity Tax Identification Number	45-0486747
Entity Incorporation, State or Country Code	DE
Entity Address, Address Line One	1044 North U.S. Highway One
Entity Address, Address Line Two	Suite 201
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			$ 24,224,151
Entity Common Stock, Shares Outstanding		36,438,703
ICFR Auditor Attestation Flag	true
Document Financial Statement Error Correction [Flag]	false

DYADIC INTERNATIONAL INC 10-K/A