Note 3 - Fair Value of Financial Instruments (Details Textual) - USD ($) $ in Thousands |
6 Months Ended | |
|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
|
| Repayments of Convertible Debt | $ 556 | $ (0) |
| Debt Discount From Early Repayment | 100 | |
| Stock Issued | $ 4,726 | $ 0 |
| Repayments of Debt in Stock, Shares (in shares) | 201,119 | |
| Repayments of Secured Debt, Cashless | $ 1,000 | |
| Repayments of Debt in Stock, Value | 300 | |
| Senior Secured Note [Member] | ||
| Repayments of Convertible Debt | 9,100 | |
| Debt Instrument, Increase (Decrease), Net | (9,000) | |
| Stock Issued | 3,700 | |
| Repayments of Debt in Stock, Value | $ 4,000 | |