Note 9 - Stockholders' Equity - Compensation Expense 2 (Details) - USD ($) |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
Jun. 30, 2026 |
Jun. 30, 2025 |
|
| Share-Based Payment Arrangement, Expense | $ 116,322 | $ 139,142 | $ 1,045,225 | $ 248,043 |
| Location, Statement of Income, Balance [Axis]: us-gaap:CostOfGoodsAndServicesSold | ||||
| Share-Based Payment Arrangement, Expense | 8,485 | 7,427 | 66,604 | 13,583 |
| Location, Statement of Income, Balance [Axis]: us-gaap:GeneralAndAdministrativeExpense | ||||
| Share-Based Payment Arrangement, Expense | 30,563 | 62,054 | 479,761 | 108,488 |
| Location, Statement of Income, Balance [Axis]: us-gaap:ResearchAndDevelopmentExpense | ||||
| Share-Based Payment Arrangement, Expense | 57,691 | 39,061 | 373,831 | 73,635 |
| Location, Statement of Income, Balance [Axis]: us-gaap:SellingAndMarketingExpense | ||||
| Share-Based Payment Arrangement, Expense | $ 19,583 | $ 30,600 | $ 125,029 | $ 52,337 |