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Note 11 - Stock-based Compensation (Details Textual) $ / shares in Units, $ in Millions |  |  | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | ---
Mar. 22, 2024 | Mar. 20, 2024 $ / shares shares | Dec. 31, 2024 USD ($) $ / shares shares | Dec. 31, 2023 $ / shares | Aug. 11, 2023 $ / shares | Dec. 22, 2021 $ / shares
Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period (Year) |  |  | 10 years |  |  |
Common Stock, Par or Stated Value Per Share (in dollars per share) | $ / shares |  | $ 0.0001 | $ 0.0001 | $ 0.0001 | $ 0.0001 | $ 0.0001
Restricted Stock [Member] |  |  |  |  |  |
Share-Based Payment Arrangement, Nonvested Award, Excluding Option, Cost Not yet Recognized, Amount | $ |  |  | $ 3.9 |  |  |
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year) |  |  | 2 years 1 month 6 days |  |  |
Fractional Shares [Member] |  |  |  |  |  |
Stock Issued During Period, Shares, Reverse Stock Splits (in shares) |  | 0 |  |  |  |
Reverse Stock Split [Member] |  |  |  |  |  |
Stockholders' Equity Note, Stock Split, Conversion Ratio | 12 | 12 |  |  |  |
Share-Based Payment Arrangement, Tranche One [Member] |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year) |  |  | 4 years |  |  |
Share-Based Payment Arrangement, Tranche One [Member] | Vesting on First Anniversary [Member] |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Rights, Percentage |  |  | 25.00% |  |  |
Share-Based Payment Arrangement, Tranche One [Member] | Vesting On Pro Rata Basis Over Remaining Period [Member] |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Rights, Percentage |  |  | 75.00% |  |  |
Share-Based Payment Arrangement, Tranche Two [Member] |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year) |  |  | 3 years |  |  |
Share-Based Payment Arrangement, Tranche Two [Member] | Vesting on First Anniversary [Member] |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Rights, Percentage |  |  | 33.33% |  |  |
Share-Based Payment Arrangement, Tranche Two [Member] | Vesting On Pro Rata Basis Over Remaining Period [Member] |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Rights, Percentage |  |  | 66.66% |  |  |
Aterian 2014 Equity Incentive Plan [Member] |  |  |  |  |  |
Common Stock, Capital Shares Reserved for Future Issuance (in shares) |  |  | 0 |  |  |
Aterian 2018 Equity Incentive Plan [Member] |  |  |  |  |  |
Common Stock, Capital Shares Reserved for Future Issuance (in shares) |  |  | 453,549 |  |  |
Inducement Equity Incentive Plan [Member] |  |  |  |  |  |
Common Stock, Capital Shares Reserved for Future Issuance (in shares) |  |  | 193,476 |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period (Year) |  |  | 10 years |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant (in shares) |  |  | 225,000 |  |  |

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