Note 7 - Share-based Compensation - Options Activities (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
The 2017 Omnibus Incentive Plan [Member]
Outstanding at December 31, 2023 (in shares)	2,525,654	1,865,226
Outstanding at December 31, 2023 (in dollars per share)	$ 5.32	$ 6.46
Outstanding at December 31, 2023 (Year)	6 years 6 months 29 days	7 years 5 months 4 days	7 years 7 months 28 days
Outstanding at December 31, 2022 (Year)	6 years 6 months 29 days	7 years 5 months 4 days	7 years 7 months 28 days
Granted (in shares)	224,750	838,939
Granted (in dollars per share)	$ 1.34	$ 3.02
Granted (in dollars per share)	$ 1.08	$ 2.53
Exercised (in shares)		(28,666)
Forfeited (in shares)	(18,598)	(149,845)
Exercised (in dollars per share)		$ 0.95
Forfeited (in dollars per share)	$ 2.67	7.5
Exercised (in dollars per share)		0.77
Forfeited (in dollars per share)	$ 2.07	$ 5.73
Exercised		$ 34
Forfeited (in shares)	(18,598)	(149,845)
Outstanding at December 31, 2024	$ 514	$ 455
Outstanding at December 31, 2025 (in shares)	2,731,806	2,525,654	1,865,226
Outstanding at December 31, 2024 (in shares)	2,731,806	2,525,654	1,865,226
Outstanding at December 31, 2025 (in dollars per share)	$ 5.01	$ 5.32	$ 6.46
Outstanding at December 31, 2024 (in dollars per share)	$ 5.01	$ 5.32	$ 6.46
Outstanding at December 31, 2024	$ 514	$ 455
Exercisable as of December 31, 2025 (in shares)	2,059,124
Exercisable as of December 31, 2024 (in shares)	2,059,124
Exercisable as of December 31, 2025 (in dollars per share)	$ 4.88
Exercisable as of December 31, 2024 (in dollars per share)	$ 4.88
Exercisable as of December 31, 2025 (Year)	6 years 7 months 9 days
Exercisable as of December 31, 2024 (Year)	6 years 7 months 9 days
Exercisable as of December 31, 2025	$ 362
Exercisable as of December 31, 2024	$ 362
Vested and expected to vest at December 31, 2025 (in shares)	2,452,926
Vested and expected to vest at December 31, 2024 (in shares)	2,452,926
Vested and expected to vest at December 31, 2025 (in dollars per share)	$ 4.32
Vested and expected to vest at December 31, 2024 (in dollars per share)	$ 4.32
Vested and expected to vest at December 31, 2025 (Year)	6 years 9 months 21 days
Vested and expected to vest at December 31, 2024 (Year)	6 years 9 months 21 days
Vested and expected to vest at December 31, 2025	$ 514
Vested and expected to vest at December 31, 2024	$ 514
SEED 2022 Share Incentive Plan [Member]
Outstanding at December 31, 2023 (in shares)	1,898,833	1,257,000
Outstanding at December 31, 2023 (in dollars per share)	$ 0.53	$ 0.5
Outstanding at December 31, 2023 (Year)	7 years 18 days	7 years 7 months 17 days	8 years 9 months 25 days
Outstanding at December 31, 2022 (Year)	7 years 18 days	7 years 7 months 17 days	8 years 9 months 25 days
Granted (in shares)	375,344	651,333
Granted (in dollars per share)	$ 1.46	$ 0.6
Granted (in dollars per share)	$ 1.3	$ 0.26
Exercised (in shares)	(77,250)
Forfeited (in shares)	(7,500)	(9,500)
Exercised (in dollars per share)	$ 1.12
Forfeited (in dollars per share)	0.5	$ 0.5
Exercised (in dollars per share)	0.84
Forfeited (in dollars per share)	$ 0.23	$ 0.32
Exercised	$ 26
Forfeited (in shares)	(7,500)	(9,500)
Outstanding at December 31, 2024	$ 2,230	$ 1,760
Outstanding at December 31, 2025 (in shares)	2,189,427	1,898,833	1,257,000
Outstanding at December 31, 2024 (in shares)	2,189,427	1,898,833	1,257,000
Outstanding at December 31, 2025 (in dollars per share)	$ 0.67	$ 0.53	$ 0.5
Outstanding at December 31, 2024 (in dollars per share)	$ 0.67	$ 0.53	$ 0.5
Outstanding at December 31, 2024	$ 2,230	$ 1,760
Exercisable as of December 31, 2025 (in shares)	989,749
Exercisable as of December 31, 2024 (in shares)	989,749
Exercisable as of December 31, 2025 (in dollars per share)	$ 0.5
Exercisable as of December 31, 2024 (in dollars per share)	$ 0.5
Exercisable as of December 31, 2025 (Year)	6 years 8 months 8 days
Exercisable as of December 31, 2024 (Year)	6 years 8 months 8 days
Exercisable as of December 31, 2025	$ 946
Exercisable as of December 31, 2024	$ 946
Vested and expected to vest at December 31, 2025 (in shares)	2,124,427
Vested and expected to vest at December 31, 2024 (in shares)	2,124,427
Vested and expected to vest at December 31, 2025 (in dollars per share)	$ 0.65
Vested and expected to vest at December 31, 2024 (in dollars per share)	$ 0.65
Vested and expected to vest at December 31, 2025 (Year)	6 years 11 months 23 days
Vested and expected to vest at December 31, 2024 (Year)	6 years 11 months 23 days
Vested and expected to vest at December 31, 2025	$ 2,215
Vested and expected to vest at December 31, 2024	$ 2,215

The weighted average grant date fair value of options exercised in period under share based payment arrangement.

No definition available.

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The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

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The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

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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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The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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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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Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of vested portions of options outstanding and currently exercisable.

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Weighted average remaining contractual term for vested portions of options outstanding and currently exercisable or convertible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Weighted average grant-date fair value of non-vested options forfeited.

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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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Weighted average remaining contractual term for fully vested and expected to vest options outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. 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 share options (or share units) exercised during the current period.

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