Note 5 - Stockholders' Equity - Schedule of Stock Option Activity (Details) - USD ($) $ / shares in Units, $ in Thousands |
6 Months Ended | 12 Months Ended |
|---|---|---|
Jun. 30, 2026 |
Dec. 31, 2025 |
|
| Outstanding, shares (in shares) | 50,000 | |
| Outstanding, weighted average exercise price (in dollars per share) | $ 1.01 | |
| Outstanding, weighted average contractual term (Year) | 9 years | |
| Outstanding, intrinsic value | $ 0 | $ 3,500 |
| Exercised/Forfeited, shares (in shares) | 0 | |
| Exercised/Forfeited, weighted average exercise price (in dollars per share) | $ 0 | |
| Exercised/Forfeited, intrinsic value | $ 0 | |
| Outstanding, shares (in shares) | 50,000 | 50,000 |
| Outstanding, weighted average exercise price (in dollars per share) | $ 1.01 | $ 1.01 |