COMMITMENTS AND CONTINGENCIES, Registration Rights (Details)	Jun. 30, 2023 Demand
Registration and Stockholder Rights [Abstract]
Number of demands eligible security holder can make	3

Represents the number of demands eligible security holder can make.

No definition available.

Name:	hcma_NumberOfDemandsEligibleSecurityHolderCanMake
Namespace Prefix:	hcma_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant