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Note 9 - Stock-Based Compensation - Valuation Assumptions (Details) - Share-Based Payment Arrangement, Option [Member] | 3 Months Ended
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Mar. 31, 2026 | Mar. 31, 2025
Expected volatility (a) | [1] | 45.90% | 0.00%
Expected annual dividend yield (b) | [2] | 0.00% | 0.00%
Risk-free interest rate (c) | [3] | 3.60% | 0.00%
Expected term, in years (d) (Year) | [4] | 2 years 8 months 12 days |
[1] | The expected volatility is based on the implied volatility of the Company's historical stock price data over the expected term.
[2] | The dividend yield is 0.0% as the Company is not expected to pay a dividend.
[3] | The risk-free interest rate is based on the average U.S. Treasury zero-coupon rate over the four days prior to the grant date. We selected the risk-free rate that is commensurate with the length of the remaining performance period as of the grant date, using interpolation where necessary.
[4] | The expected term is the simple average of the vesting periods and the contractual term.

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- Definition The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (f)(2)(iii) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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- Definition The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (f)(2)(ii) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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- Definition The risk-free interest rate assumption that is used in valuing an option on its own shares. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (f)(2)(iv) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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- Definition Expected term of award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (f)(2)(i) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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