Note 9 - Stock-based Compensation - Summary of Stock Option Activity (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Outstanding, options (in shares)	14,062	7,876
Outstanding, weighted average exercise price (in dollars per share)	$ 2.83	$ 3.81
Outstanding, weighted average remaining contractual term (Year)	6 years 8 months 8 days	6 years 2 months 23 days	8 years 18 days
Outstanding, aggregate intrinsic value	$ 36,614	$ 579	$ 11
Granted, options (in shares)	4,777	6,193
Granted, weighted average exercise price (in dollars per share)	$ 3.63	$ 1.58
Granted, weighted average remaining contractual term (Year)	8 years 9 months 3 days	7 years 1 month 6 days
Granted, aggregate intrinsic value	$ 2	$ 0
Exercised, options (in shares)	(545)	0
Exercised, weighted average exercise price (in dollars per share)	$ 2.34	$ 0
Forfeited/cancelled (in shares)	(1,942)	(7)
Forfeited/cancelled (in dollars per share)	$ 2.4	$ 3.04
Forfeited/cancelled	$ 2,341	$ 0
Exercised	$ 1,214
Outstanding at December 31, 2024 (in shares)	16,352	14,062	7,876
Outstanding at December 31, 2024 (in dollars per share)	$ 3.13	$ 2.83	$ 3.81
Vested at December 31, 2025 (in shares)	9,513
Vested at December 31, 2025 (in dollars per share)	$ 3.38
Vested at December 31, 2025 (Year)	5 years 2 months 26 days
Vested at December 31, 2025	$ 18,932

Intrinsic value of granted award under share-based payment arrangement. Excludes share and unit options.

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The aggregate intrinsic value of options forfeited or cancelled under share-based compensation arrangement.

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Weighted average remaining contractual term for option awards granted during the period, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares.

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The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan.

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Gross number of share options (or share units) granted during the period.

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Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding.

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Number of options outstanding, including both vested and non-vested options.

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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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Amount by which current fair value of underlying stock exceeds exercise price of fully vested and expected to vest options outstanding. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur.

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Number of fully vested and expected to vest options outstanding that can be converted into shares under option plan. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur.

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Weighted-average exercise price, at which grantee can acquire shares reserved for issuance, for fully vested and expected to vest options outstanding. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur.

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Weighted average price at which option holders acquired shares when converting their stock options into shares.

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Weighted average price at which grantees could have acquired the underlying shares with respect to stock options that were terminated.

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Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

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Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Number of share options (or share units) exercised during the current period.

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