Note 7 - Subsequent Events (Details Textual) € in Millions	May 10, 2022 EUR (€)
Joint Development Agreement [Member] \| Subsequent Event [Member] \| Leprino Foods Company [Member] \| Dyadic International (USA), Inc [Member]
Research project, Maximum Funding Amount	€ 3.6

Represents maximum funding amount of research project.

No definition available.

Name:	dyai_ResearchProjectMaximumFundingAmount
Namespace Prefix:	dyai_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant