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Note 7 - Shareholders' Equity (Details Textual) - USD ($) | 3 Months Ended |
--- | --- | ---
Mar. 31, 2025 | Mar. 31, 2024 | Dec. 31, 2024
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures (in shares) |  | 227,379 | 375,753 |
Share-based Compensation Arrangements by Share-based Payment Award, Other than Options, Grants in Period, Weighted Average Exercise Price (in dollars per share) |  | $ 1.67 | $ 1.5 |
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period (in shares) | [1] | 55,000 |  |
Treasury Stock, Common, Shares (in shares) |  | 12,253,502 |  |
Treasury Stock, Value |  | $ 18,929,915 |  | $ 18,929,915
Common Stock [Member] |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period (in shares) |  | 27,483 |  |
[1] | Repre sents the following options exercised: (a) 25,000 stock options with an exercise price of $0.97 per share exercised by a board member (b) 30,000 stock options with an exercise price of $1.33 per share exercised by a board member.

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- Definition Weighted average per share amount at which grantees can acquire shares of common stock by exercise of other than options. + References No definition available. + Details
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- Definition Number of shares issued during the period related to Restricted Stock Awards, net of any shares forfeited. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 2 -SubTopic 10 -Topic 505 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481112/505-10-50-2 Reference 2: 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(28)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 Reference 3: 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 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 505 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480008/505-10-S99-1 + Details
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