Note 3 - Stockholders' Equity (Details Textual) - USD ($) |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2025 |
Jun. 30, 2024 |
Jun. 30, 2025 |
Jun. 30, 2024 |
|
| Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares) | 35,000 | |||
| Share-Based Payment Arrangement, Expense | $ 156,002 | $ 158,424 | $ 310,734 | $ 211,695 |
| Share-Based Payment Arrangement, Nonvested Award, Option, Cost Not yet Recognized, Amount | $ 1,022,373 | $ 1,022,373 | ||
| Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year) | 1 year 8 months 12 days | |||
| Share-Based Payment Arrangement, Option [Member] | ||||
| Share-Based Payment Arrangement, Expense, Tax Benefit | $ 0 | |||