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Note 2 - Cash, Cash Equivalents, and Investments (Details Textual) - USD ($)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023
Debt Securities, Held-to-maturity, Securities Purchased, Discount	$ 9,023	$ 1,148	$ 70,495	$ 33,982
Corporate Debt Securities [Member]
Debt Securities, Held-to-maturity, Securities Purchased, Discount					$ 39,012

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: