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Note 2 - Basis of Presentation and Use of Estimates and Significant Accounting Policies (Details Textual) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2025 | Dec. 31, 2024
Cash, Uninsured Amount |  | $ 0 |
Cash, FDIC Insured Amount |  | 250,000 |
Accounts Receivable, Allowance for Credit Loss |  | 0 | $ 0
Accounts Receivable, Allowance for Credit Loss, Writeoff |  | 0 | 0
Accounts Receivable, Allowance for Credit Loss, Recovery |  | 0 | 0
Goodwill, Impairment Loss |  | 0 | 0
Impairment, Long-Lived Asset, Held-for-Use |  | 0 | 0
Asset Impairment Charges | [1] | 2,667,100 | 0
Advertising Expense |  | $ 109,506 | $ 35,696
Share-Based Payment Arrangement, Option [Member] |  |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares) |  | 801,760 | 664,000
Fair Value, Nonrecurring [Member] |  |  |
Fair Value, Net Asset (Liability) |  | $ 0 |
[1] | During the year ended December 31, 2025, the Company determined that certain machinery previously assigned to the Re-Tain® business no longer had a future use to the Company or any specific undiscounted cash flows other than estimated proceeds from the expected sale. As a result, the Company recognized an impairment charge on the machinery to write-down their cost to their estimated fair value.

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