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Note 2 - Cash, Cash Equivalents, and Investments (Details Textual) - USD ($) | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2024 | Jun. 30, 2023 | Dec. 31, 2023
Debt Securities, Held-to-maturity, Securities Purchased, Discount | $ 31,357 | $ 17,601 | $ 61,472 | $ 32,834 |
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
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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: |