Represents the amount of Earn-out Payment.

No definition available.

Name:	ater_EarnOutPaymentAmount
Namespace Prefix:	ater_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Represents the amount of coupons awarded as part of litigation settlement.

+ References

No definition available.

+ Details

Name:	ater_LitigationSettlementCouponsAwarded
Namespace Prefix:	ater_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Represents the amount of litigation settlement in paid in cash.

+ References

No definition available.

+ Details

Name:	ater_LitigationSettlementInCash
Namespace Prefix:	ater_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount awarded to other party in judgment or settlement of litigation.

+ References

No definition available.

+ Details

Name:	us-gaap_LitigationSettlementAmountAwardedToOtherParty
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Carrying value as of the balance sheet date of liabilities incurred through that date and payable for statutory sales and use taxes, including value added tax. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.19(a))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1

+ Details

Name:	us-gaap_SalesAndExciseTaxPayableCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Details

Name:	srt_LitigationCaseAxis=ater_MuellerActionMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_LitigationCaseAxis=ater_EarnoutPaymentDisputeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Note 9 - Commitments and Contingencies (Details Textual) $ in Thousands			1 Months Ended
	Feb. 24, 2022 USD ($)	Feb. 24, 2022 GBP (£)	Oct. 30, 2021 USD ($)	Sep. 30, 2023 USD ($)	Dec. 31, 2022 USD ($)
Sales and Excise Tax Payable, Current				$ 899	$ 711
Mueller Action [Member]
Litigation Settlement In Cash			$ 500
Litigation Settlement, Coupons Awarded			300
Litigation Settlement, Amount Awarded to Other Party			$ 800
Earn-out Payment Dispute [Member]
Earn Out Payment Amount	$ 8,800	£ 6,902,816