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Note 7 - Stockholders' Equity (Details Textual) - USD ($) $ / shares in Units, $ in Thousands |  | 3 Months Ended | 9 Months Ended |
--- | --- | --- | --- | ---
Aug. 31, 2020 | Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024 | Dec. 31, 2024
Dividends, Preferred Stock |  | $ 1,239 | $ 1,168 | $ 3,667 | $ 3,455 |
Preferred Stock, Shares Outstanding (in shares) |  | 62,000 |  | 62,000 |  | 62,000
Convertible Preferred Stock, Shares Reserved for Future Issuance (in shares) |  | 8,800,000 |  | 8,800,000 |  |
Series A Redeemable Convertible Preferred Stock [Member] |  |  |  |  |  |
Temporary Equity, Shares Issued (in shares) |  | 62,000 |  | 62,000 |  | 62,000
Deferred Offering Costs |  | $ 2,100 |  | $ 2,100 |  |
Dividends, Preferred Stock |  | $ 1,200 | $ 1,200 | $ 3,700 | $ 3,500 |
Preferred Stock, Shares Outstanding (in shares) |  | 62,000 |  | 62,000 |  |
Series A Redeemable Convertible Preferred Stock [Member] | Private Placement [Member] |  |  |  |  |  |
Temporary Equity, Shares Issued (in shares) | 85,000 |  |  |  |  |
Shares Issued, Price Per Share (in dollars per share) | $ 1,000 |  |  |  |  |
Proceeds from Issuance of Preferred Stock and Preference Stock | $ 85,000 |  |  |  |  |
Preferred Stock, Dividend Rate, Percentage | 6.00% |  |  |  |  |
Preferred Stock, Convertible, Conversion Price (in dollars per share) | $ 9.5 | $ 14.25 |  | $ 14.25 |  |

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- Definition The number of securities classified as temporary equity that have been sold (or granted) to the entity's shareholders. Securities issued include securities outstanding and securities held in treasury. Temporary equity is a security with redemption features that are outside the control of the issuer, is not classified as an asset or liability in conformity with GAAP, and is not mandatorily redeemable. Includes any type of security that is redeemable at a fixed or determinable price or on a fixed or determinable date or dates, is redeemable at the option of the holder, or has conditions for redemption which are not solely within the control of the issuer. If convertible, the issuer does not control the actions or events necessary to issue the maximum number of shares that could be required to be delivered under the conversion option if the holder exercises the option to convert the stock to another class of equity. If the security is a warrant or a rights issue, the warrant or rights issue is considered to be temporary equity if the issuer cannot demonstrate that it would be able to deliver upon the exercise of the option by the holder in all cases. Includes stock with put option held by ESOP and stock redeemable by holder only in the event of a change in control of the issuer. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 480 -SubTopic 10 -Name Accounting Standards Codification -Section S50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479857/480-10-S50-1 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(27)(b)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 + Details
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