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Note 9 - Share-based Compensation (Details Textual) - USD ($) $ in Thousands | 1 Months Ended | 12 Months Ended |
--- | --- | --- | ---
May 31, 2021 | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | Mar. 09, 2017
Share-Based Payment Arrangement, Expense |  | $ 554 | $ 1,584 | $ 3,152 |
Long-term Incentive Awards [Member] | Senior Management [Member] |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value |  | 37 |  |  |
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount |  | $ 45 |  |  |
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year) |  | 1 year 1 month 13 days |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other Than Options, Aggregate Value, Granted |  |  |  | $ 79,225 |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Settled in Shares, Percentage |  |  |  | 25.00% |
Share-based Compensation Arrangement By Share-based Payment Award, Equity Instruments Other Than Options, Settled In Cash Or Shares, Percentage |  |  |  | 75.00% |
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period (in shares) |  | 3,486 |  |  |
Share-Based Payment Arrangement, Expense |  | $ 20 | $ 32 | $ 204 |
The 2017 Omnibus Incentive Plan [Member] |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized (in shares) |  |  |  |  | 5,277,197
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding and Exercisable, Intrinsic Value |  | $ 0 |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in shares) |  | 760,723 | 615,407 | 1,134,672 |
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Forfeitures in Period (in shares) |  | 905,936 | 1,212,306 | 307,883 |
The 2017 Omnibus Incentive Plan [Member] | Options Granted in May 2021 [Member] |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in shares) | 370,000 |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Forfeitures in Period (in shares) |  | 135,000 | 170,000 |  |
The 2017 Omnibus Incentive Plan [Member] | Restricted Stock [Member] |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value |  | $ 121 | $ 24 | $ 273 |
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount |  | $ 516 |  |  |
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year) |  | 1 year 1 month 2 days |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period (in shares) |  | 102,118 | 6,216 | 22,683 |
The 2017 Omnibus Incentive Plan [Member] | Share-Based Payment Arrangement, Option [Member] |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested in Period, Fair Value |  | $ 367 | $ 906 | $ 2,158 |
SEED 2022 Share Incentive Plan [Member] |  |  |  |  |
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount |  | $ 178 |  |  |
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year) |  | 2 years 1 month 2 days |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in shares) |  | 172,000 | 1,281,000 |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Forfeitures in Period (in shares) |  | 95,000 | 93,000 |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period (in shares) |  | 127,000 | 11,000 |  |
Share-Based Payment Arrangement, Expense |  | $ 216 | $ 81 |  |
SEED 2022 Share Incentive Plan [Member] | Minimum [Member] |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year) |  |  | 4 years |  |
SEED 2022 Share Incentive Plan [Member] | Maximum [Member] |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year) |  |  | 5 years |  |

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- Definition The percentage of equity instruments other than options settled in cash or shares under share based payment arrangement. + References No definition available. + Details
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