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Condensed Consolidated Statements of Cash Flows (Parenthetical) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Net Cash Provided by (Used in) Financing Activities [Abstract]
Proceeds from the issuance of common stock including related party	$ 0	$ 17,995

X

- Definition

Proceeds from the issuance of common stock including related party.

+ References

No definition available.

+ Details

Name:	annx_ProceedsFromTheIssuanceOfCommonStockIncludingRelatedParty
Namespace Prefix:	annx_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- References

No definition available.

+ Details

Name:	us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration