Note 7 - Stockholders' Equity - Schedule of Stockholders Equity (Details) - ATM [Member] - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | ||||
|---|---|---|---|---|---|---|
Jun. 30, 2025 |
Mar. 31, 2025 |
Jun. 30, 2024 |
Mar. 31, 2024 |
Jun. 30, 2025 |
Jun. 30, 2024 |
|
| Sale of common stock (in shares) | 140,104 | 335,112 | 221,378 | 412,239 | ||
| Gross proceeds | $ 350 | $ 1,847 | $ 562 | $ 2,438 | ||
| Associated issuance costs | $ 45 | $ 27 | $ 71 | $ 32 | $ 72 | $ 103 |
| X | ||||||||||
- Definition Amount of decrease in additional paid in capital (APIC) resulting from direct costs associated with issuing stock. Includes, but is not limited to, legal and accounting fees and direct costs associated with stock issues under a shelf registration. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition The cash inflow associated with the amount received from the stock plan during the period. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Number of new stock issued during the period. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Details
|