Note 6 - Stock-Based Compensation Expense - Schedule of Stock-Based Compensation Expense - 10Q 2 (Details) - USD ($) |
3 Months Ended | 6 Months Ended | 12 Months Ended | |||
|---|---|---|---|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
Jun. 30, 2026 |
Jun. 30, 2025 |
Dec. 31, 2025 |
Dec. 31, 2024 |
|
| Total stock-based compensation expense | $ 1,115,154 | $ 528,644 | ||||
| Share-Based Payment Arrangement, Option [Member] | ||||||
| Total stock-based compensation expense | $ 163,746 | $ 292,740 | $ 383,063 | $ 585,484 | $ 1,110,987 | $ 474,477 |
| Share-Based Payment Arrangement, Option [Member] | Location, Statement of Income, Balance [Axis]: us-gaap:GeneralAndAdministrativeExpense | ||||||
| Total stock-based compensation expense | 56,075 | 162,417 | 167,215 | 324,845 | ||
| Share-Based Payment Arrangement, Option [Member] | Location, Statement of Income, Balance [Axis]: us-gaap:ResearchAndDevelopmentExpense | ||||||
| Total stock-based compensation expense | $ 107,671 | $ 130,323 | $ 215,848 | $ 260,639 | ||