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Note 8 - Stock-based Compensation (Details Textual) $ / shares in Units, $ in Millions			9 Months Ended
	Mar. 22, 2024	Mar. 20, 2024 $ / shares shares	Sep. 30, 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 \| $			$ 5
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)			2 years 3 months 14 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)			460,603
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