Note 6 - Stockholders' Equity (Details Textual) - USD ($) $ / shares in Units, $ in Thousands |
12 Months Ended | |
|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
|
| Preferred Stock, Shares Authorized (in shares) | 1,000,000 | 1,000,000 |
| Preferred Stock, Par or Stated Value Per Share (in dollars per share) | $ 0.001 | $ 0.001 |
| Preferred Stock, Shares Issued (in shares) | 0 | 0 |
| Common Stock, Shares Authorized (in shares) | 25,000,000 | 25,000,000 |
| Common Stock, Par or Stated Value Per Share (in dollars per share) | $ 0.001 | $ 0.001 |
| Proceeds from Issuance of Common Stock | $ 0 | $ 5,796 |
| Preferred Stock, Shares Outstanding (in shares) | 0 | 0 |
| Ladenburg ATM Facility [Member] | ||
| Stock Issued During Period, Shares, New Issues (in shares) | 0 | 1,423,441 |
| Proceeds from Issuance of Common Stock | $ 5,800 | |
| Payments for Commissions | $ 200 | |
| X | ||||||||||
- Definition Face amount or stated value per share of common stock. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition The maximum number of common shares permitted to be issued by an entity's charter and bylaws. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition The amount of cash paid for commissions during the current period. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Face amount or stated value per share of preferred stock nonredeemable or redeemable solely at the option of the issuer. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition The maximum number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) permitted to be issued by an entity's charter and bylaws. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Number of shares issued for nonredeemable preferred shares and preferred shares redeemable solely at option of issuer. Includes, but is not limited to, preferred shares issued, repurchased, and held as treasury shares. Excludes preferred shares classified as debt. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Aggregate share number for all nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer) held by stockholders. Does not include preferred shares that have been repurchased. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition The cash inflow from the additional capital contribution to the entity. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Number of new stock issued during the period. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Details
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