Note 7 - Stockholders' Equity - Stock Warrants (Details) - USD ($) $ / shares in Units, $ in Thousands |
6 Months Ended | 12 Months Ended |
|---|---|---|
Jun. 30, 2026 |
Dec. 31, 2025 |
|
| Warrants, outstanding (in shares) | 772,741 | |
| Outstanding, aggregate intrinsic value | $ 0 | $ 0 |
| Warrants, Expired (in shares) | (10) | |
| Expired, weighted average exercise price (in dollars per share) | $ 0.11 | |
| Expired, term (Year) | 0 years | |
| Warrants, outstanding (in shares) | 772,731 | 772,741 |
| Weighted Average [Member] | ||
| Outstanding, weighted average exercise price (in dollars per share) | $ 10.56 | |
| warrant, term (Year) | 2 years 9 months 18 days | 3 years 3 months 18 days |
| Outstanding, weighted average exercise price (in dollars per share) | $ 10.56 | $ 10.56 |
| X | ||||||||||
- Definition Aggregate intrinsic value of class of warrant or right. No definition available.
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| X | ||||||||||
- Definition Represents the number of warrants expired during the period. No definition available.
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| X | ||||||||||
- Definition Represents exercise price of warrants or rights for warrants expired during period. No definition available.
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| X | ||||||||||
- Definition Weighted-average contractual term remaining for warrants expired in period. No definition available.
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| X | ||||||||||
- Definition Exercise price per share or per unit of warrants or rights outstanding. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Number of warrants or rights outstanding. No definition available.
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| X | ||||||||||
- Definition Period between issuance and expiration of outstanding warrant and right embodying unconditional obligation requiring redemption by transferring asset at specified or determinable date or upon event certain to occur, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Details
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