CONSOLIDATED STATEMENTS OF CASH FLOWS (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2023	Dec. 31, 2022
Proceeds from issuance of common stock to related party	$ 299,706	$ 0

Proceeds from issuance of common stock to related party.

No definition available.

Name:	aclx_ProceedsFromIssuanceOfCommonStockToRelatedParty
Namespace Prefix:	aclx_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration