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Note 4 - Common Stock (Details Textual) - shares | Dec. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Common Stock, Shares, Issued (in shares) | 31,767,329 | 31,361,303
Common Stock, Shares, Outstanding (in shares) | 30,708,273 | 30,385,297
Reserved For Issuance Upon Exercise Or Vesting Of Equity Awards [Member] |  |
Common Stock, Capital Shares Reserved for Future Issuance (in shares) | 4,215,272 |
Reserved For Issuance Upon Exercise Or Vesting Of Equity Awards [Member] | Share-Based Payment Arrangement, Option [Member] |  |
Common Stock, Capital Shares Reserved for Future Issuance (in shares) | 176,000 |
NIL Coupon Non-redeemable Convertible Unsecured Loan Notes [Member] | Unsecured Debt [Member] |  |
Common Stock, Capital Shares Reserved for Future Issuance (in shares) |  | 6,715

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- Definition Aggregate number of common shares reserved for future issuance. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(29)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 + Details
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- Definition Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(29)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 + Details
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