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Note 12 - Stock-based Compensation (Details Textual) - USD ($) $ / shares in Units, $ in Thousands |  | 1 Months Ended | 3 Months Ended |
--- | --- | --- | --- | ---
Mar. 31, 2026 | Jan. 31, 2026 | Mar. 31, 2017 | Mar. 31, 2026 | Mar. 31, 2025 | Jan. 31, 2017
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period (in shares) |  |  |  | 0 | 0 |
Employees and Directors [Member] |  |  |  |  |  |
Share-Based Payment Arrangement, Expense |  |  |  | $ 25 | $ 2 |
Share-Based Payment Arrangement, Nonemployee [Member] |  |  |  |  |  |
Share-Based Payment Arrangement, Expense |  |  |  |  | $ 0 |
The 2026 Plan [Member] |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized |  | 22,223,927 |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Annual Increase in Shares Authorized, Percentage of Outstanding Common Stock |  |  |  |  |  | 4.00%
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant | 539,491 |  |  | 539,491 |  |
The 2026 Plan [Member] | Incentive Stock Options (ISOs) [Member] |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Purchase Price of Common Stock, Percentage of Stock Owned by Shareholder, Minimum |  | 10.00% |  | 10.00% |  |
The 2026 Plan [Member] | Minimum [Member] |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Purchase Price of Common Stock, Percent |  | 100.00% |  |  |  |
The 2026 Plan [Member] | Minimum [Member] | Incentive Stock Options (ISOs) [Member] | Shareholder of More Than 10% [Member] |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Purchase Price of Common Stock, Percent |  | 110.00% |  |  |  |
The 2026 Plan [Member] | Maximum [Member] |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period |  | 10 years |  |  |  |
The 2026 Plan [Member] | Maximum [Member] | Incentive Stock Options (ISOs) [Member] |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period |  | 5 years |  |  |  |
The 2007 Omnibus Incentive Plan [Member] | Share-Based Payment Arrangement, Option [Member] |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period |  |  |  | 10 years |  |
The 2017 Omnibus Incentive Plan [Member] | Incentive Stock Options (ISOs) [Member] |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Purchase Price of Common Stock, Percentage of Stock Owned by Shareholder, Minimum |  |  | 10.00% |  |  |
The 2017 Omnibus Incentive Plan [Member] | Share-Based Payment Arrangement, Option [Member] | Share-Based Payment Arrangement, Employee [Member] |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period |  |  |  | 4 years |  |
The 2017 Omnibus Incentive Plan [Member] | Share-Based Payment Arrangement, Option [Member] | Share-Based Payment Arrangement, Nonemployee [Member] |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period |  |  |  | 1 year |  |
The 2017 Omnibus Incentive Plan [Member] | Minimum [Member] |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Purchase Price of Common Stock, Percent |  |  | 100.00% |  |  |
The 2017 Omnibus Incentive Plan [Member] | Minimum [Member] | Incentive Stock Options (ISOs) [Member] | Shareholder of More Than 10% [Member] |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Purchase Price of Common Stock, Percent |  |  | 110.00% |  |  |
The 2017 Omnibus Incentive Plan [Member] | Maximum [Member] |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period |  |  | 10 years |  |  |
The 2017 Omnibus Incentive Plan [Member] | Maximum [Member] | Incentive Stock Options (ISOs) [Member] |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period |  |  | 5 years |  |  |
The 2026 Equity Incentive Plan [Member] | Restricted Stock Units (RSUs) [Member] |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Non-Option Equity Instruments, Granted (in shares) | 21,684,436 |  |  |  |  |
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount | $ 20,400 |  |  | $ 20,400 |  |
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year) | 2 years 2 months 12 days |  |  |  |  |
The 2026 Equity Incentive Plan [Member] | Time Based RSUs [Member] |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Non-Option Equity Instruments, Granted (in shares) | 6,238,828 |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value (in dollars per share) | $ 1.43 |  |  |  |  |
The 2026 Equity Incentive Plan [Member] | Performance Based RSUs [Member] |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Non-Option Equity Instruments, Granted (in shares) | 15,445,608 |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value (in dollars per share) | $ 1.49 |  |  |  |  |
The 2026 Equity Incentive Plan [Member] | VWAP RSUs [Member] |  |  |  |  |  |
Share-Based Compensation Arrangements by Share-Based Payment Award, Equity Instruments Other Than Options, Volume-Weighted Average Price Threshold One (in dollars per share) | 1.7 |  |  | $ 1.7 |  |
Share-Based Compensation Arrangements by Share-Based Payment Award, Equity Instruments Other Than Options, Volume-Weighted Average Price Threshold Two (in dollars per share) | 2.55 |  |  | 2.55 |  |
Share-Based Compensation Arrangements by Share-Based Payment Award Equity Instruments Other Than Options Volume-Weighted Average Price Threshold Three (in dollars per share) | $ 5.1 |  |  | $ 5.1 |  |
Share-Based Compensation Arrangements by Share-Based Payment Award, Equity Instruments Other Than Options, First Threshold, Value | $ 250,000 |  |  | $ 250,000 |  |
Share-Based Compensation Arrangements by Share-Based Payment Award, Equity Instruments Other Than Options, Second Threshold, Value | 400,000 |  |  | 400,000 |  |
Share-Based Compensation Arrangements by Share-Based Payment Award, Equity Instruments Other Than Options, Third Threshold, Value | $ 800,000 |  |  | $ 800,000 |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Volatility Rate | 157.00% |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Risk Free Interest Rate | 3.90% |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Dividend Rate | 0.00% |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Term | 3 years |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Exercise Price | $ 1.49 |  |  | $ 1.49 |  |

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- Definition The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(01) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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- Definition Agreed-upon price for the exchange of the underlying asset relating to the share-based payment award. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (f)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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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 difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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