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Note 2 - Summary of Significant Accounting Policies (Details Textual) - USD ($) | 3 Months Ended | 9 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024 | Dec. 31, 2024 | Apr. 01, 2020 | Jul. 01, 2018 | Oct. 01, 2017
Cash, Uninsured Amount | $ 0 |  | $ 0 |  |  |  |  |
Cash, FDIC Insured Amount | 250,000 |  | 250,000 |  |  |  |  |
Accounts Receivable, Allowance for Credit Loss | 0 |  | 0 |  | $ 0 |  |  |
Accounts Receivable, Allowance for Credit Loss, Writeoff | 0 | $ 0 | 0 | $ 0 |  |  |  |
Accounts Receivable, Allowance for Credit Loss, Recovery | 0 | 0 | 0 | 0 |  |  |  |
Goodwill, Impairment Loss | 0 | 0 | 0 | 0 |  |  |  |
Impairment, Long-Lived Asset, Held-for-Use | 0 | 0 | 0 | 0 |  |  |  |
Share-Based Payment Arrangement, Expense | 73,161 | $ 77,557 | 192,090 | $ 256,688 |  |  |  |
Fair Value, Nonrecurring [Member] |  |  |  |  |  |  |  |
Fair Value, Net Asset (Liability) | $ 0 |  | $ 0 |  | $ 0 |  |  |
Building 33 [Member] |  |  |  |  |  |  |  |
Property, Plant and Equipment, Useful Life (Year) |  |  |  |  |  |  |  | 39 years
Equipment for Nisin DS Facility [Member] |  |  |  |  |  |  |  |
Property, Plant and Equipment, Useful Life (Year) |  |  |  |  |  |  | 10 years |
Property, Plant and Equipment, Percentage of Assets |  |  |  |  |  |  | 86.00% |
Leasehold Improvements [Member] |  |  |  |  |  |  |  |
Property, Plant and Equipment, Useful Life (Year) |  |  |  |  |  | 10 years |  |

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