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Note 2 - Cash, Cash Equivalents, and Investments (Details Textual) - USD ($)	3 Months Ended		12 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Dec. 31, 2024
Debt Securities, Held-to-maturity, Securities Purchased, Discount	$ 6,104	$ 1,547
Corporate Debt Securities [Member]
Debt Securities, Held-to-maturity, Securities Purchased, Discount			$ 78,770

X

- Definition

Represents securities that were purchased at a discount.

+ References

No definition available.

+ Details

Name:	dyai_DebtSecuritiesHeldtomaturitySecuritiesPurchasedDiscount
Namespace Prefix:	dyai_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Details

Name:	us-gaap_FinancialInstrumentAxis=us-gaap_CorporateDebtSecuritiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: