Note 2 - Summary of Significant Accounting Policies - Other Non-current Assets (Details) - USD ($) $ in Thousands |
Jun. 30, 2026 |
Dec. 31, 2025 |
|---|---|---|
| Patents | $ 34 | $ 34 |
| Security deposits | 72 | 72 |
| Interest receivable | 5 | 0 |
| Total | $ 111 | $ 106 |
| X | ||||||||||
- Definition The value of patents classified as noncurrent. No definition available.
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| X | ||||||||||
- Definition The amount of security deposits classified as noncurrent. No definition available.
|
| X | ||||||||||
- Definition Carrying amount as of the balance sheet date of noncurrent interest earned but not received. Also called accrued interest or accrued interest receivable. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition Amount of noncurrent assets classified as other. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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